Multi-source solid waste recycling method based on the combination of calcium oxide, silicon oxide, aluminum oxide and magnesium oxide

Abstract

To provide a recycling method of a solid waste of multiple sources having advantages of achieving synergic recycling of a solid waste of multiple sources, making the waste into an alloy and an inorganic non-metal material, having a short process, having a wide application range, having high operability, and being easy to be industrialized.SOLUTION: A method includes steps of: collecting multiple-source solid waste component data; performing component calculation on calcium oxide, silicon oxide, aluminum oxide, and magnesium oxide, blending them, and obtaining an inorganic non-metal material raw material having a target component; melting the raw material to obtain a slug, using carbon, metallic aluminum, aluminum nitride, aluminum carbide, silicon nitride, and silicon carbide contained in a solid waste of multiple sources as a reducer; providing a high-temperature homogeneous reaction environment by the slug acting as a solvent of a reactant; a valuable metal in the slug is reduced by the reducer to obtain an alloy and achieving valuable metal recovery; and rising the slug and using the slug as an inorganic non-metal material.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to the field of solid waste recycling, in particular to a multi-source solid waste recycling method based on a combination of calcium oxide, silicon oxide, aluminum oxide and magnesium oxide. [Background technology]

[0002] With the development of industry and the improvement of living standards, the amount of solid waste generated is increasing year by year. Because no rational treatment method has been established, solid waste is still mainly deposited in piles or landfills. However, solid waste is a mis-discarded resource that contains a large amount of inorganic non-metallic raw materials such as calcium oxide, silica, alumina, and magnesium oxide, as well as valuable metallic elements such as vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, molybdenum, cadmium, tin, and lead. If solid waste can be turned into inorganic non-metallic materials, it can effectively alleviate the environmental pressure caused by solid waste and reduce the consumption of traditional inorganic non-metallic raw materials.

[0003] Inorganic nonmetallic materials are mainly prepared by the development of calcium oxide, silicon dioxide, alumina, and magnesium oxide, and exist in the form of silicates, aluminates, aluminosilicates, aluminum magnesium salts, etc. Silicates include tricalcium silicate (Ca3SiO5), dicalcium silicate (Ca2SiO4), wollastonite (CaSiO3), wollastonite (Ca3Si2O7), asbestos (CaMg3Si4O 12 ), olivine (Mg2SiO4), and aluminates include dodecaluminate (Ca 12 Al 14 O 33 ), tricalcium aluminate (Ca3Al2O6) 、 Calcium aluminate (CaAl2O4) 、 Calcium dialuminate (CaAl4O7), and aluminosilicates include calcium aluminum yellow feldspar (Ca2Al2SiO7), calcium feldspar (CaAl2Si2O8), and mullite (Al6Si2O13 ), and aluminum magnesiumates include magnesium aluminum spinel (MgAl2O4).

[0004] Inorganic nonmetallic materials are mainly used in the field of building materials, including traditional building materials such as cement, glass, ceramics, etc., and new building materials such as water-permeable bricks, microcrystalline glass, geopolymers, rock wool, porous materials, etc. China's building materials market is huge and growing, and the value of converting solid waste into inorganic nonmetallic materials is high. Their application in the field of building materials can eliminate a large amount of solid waste, effectively relieve the environmental pressure caused by solid waste, and reduce the consumption of traditional inorganic nonmetallic material raw materials.

[0005] At present, there are two types of solid waste resource utilization: wet method and thermal method. Both of them target specific types of solid waste, do not start from the basic oxide units contained in solid waste, and lack mechanisms and programs for scientifically developing solid waste components. The wet method mainly uses solid waste containing active and inactive components as cement-based materials and aggregates, such as cement concrete and permeable bricks. Solid waste is selected as cement raw material or aggregate. The solid waste is crushed into fine powder and mixed uniformly to obtain a mixture. The mixture is mixed with water to obtain a slurry, which is then poured into a mold to be molded. After maintenance at room temperature or high temperature, cement concrete or permeable bricks are obtained. The thermal method is mainly ceramics and microcrystalline glass. The process is as follows: Select appropriate solid waste, batch, and mix to obtain a mixture. After molding the mixture, sinter it at high temperature to obtain ceramics. The mixture is melted, cast, and heat treated to obtain microcrystalline glass.

[0006] China Patent Publication No. 114671633 discloses an all-solid waste clinker-free cement-based material, conductive mortar and its preparation method using alkaline slag, steel slag, red mud, waste gypsum, biomass ash and slag as raw materials. Among them, alkaline slag, steel slag and red mud are used as alkaline activators, waste gypsum is used as sulfuric acid activators, and slag and biomass ash are used as activators. The slag and biomass ash produce hydrated calcium silicate gel and calomel through the action of alkaline-sulfuric acid double activation, so that the slurry has adhesive properties and can be used as a substitute for cement. However, this technology does not take into account the scientific formulation of the basic oxide units in the solid waste, so there are large technical constraints, and the product performance is unstable due to the high content of salt impurities and alkaline impurities in the solid waste.

[0007] China Patent Publication No. 115477502 discloses a method for producing water-permeable bricks using solid waste, whose raw materials include iron slag, fly ash, sand, diatomaceous earth, cement, and straw powder. Among them, iron slag, fly ash, and eolian sedimentary sand are aggregates, diatomaceous earth and cement are cementitious materials, and straw powder is a reinforcing material. However, this technology does not consider the scientific arrangement of the basic oxide units in the solid waste, and has large technical constraints, the solid waste addition amount of iron slag and fly ash is small, and the solid waste treatment capacity is too low.

[0008] China Patent Publication No. 106630640 discloses that microcrystalline glass, copper slag, red mud slag, calcium carbide slag and other industrial wastes are comprehensively utilized in a certain proportion to prepare wollastonite microcrystalline glass for use in building and decorative materials. However, the solid wastes handled are only three types, copper slag, red mud slag and calcium carbide slag, and the mineral phase of the microcrystalline glass product is only wollastonite, which is a major limitation, and the valuable metals in the solid wastes are not recycled.

[0009] China Patent Publication No. 112958584 discloses a method for reducing heavy metals in hazardous solid waste with secondary aluminum ash slag and utilizing the slag, which involves mixing secondary aluminum ash slag with hazardous solid waste, waste glass and quicklime, using secondary aluminum ash slag as a reducing agent with aluminum nitride, and melting the slag to reduce heavy metals in the metal phase of hazardous solid waste, resulting in a slag with high utility value for building materials. However, the solid waste handled is limited to secondary aluminum ash slag, hazardous solid waste and waste glass, and the target mineral phase composition of the product is narrow, and there is no systematic composition calculation and batch procedure, so the scope of application is narrow.

[0010] China Patent Publication No. 111995436 discloses solid waste ceramic tile and its preparation method, which is made by using raw materials including ceramic waste, red mud, gungu, basalt, bentonite, zircon sand, ball milling, drying, pressing, drying, applying bottom glaze, applying surface glaze, drying, firing to finally obtain solid waste ceramic tile. However, red mud contains a lot of valuable iron, and directly firing the ceramic waste of iron resources, the chemical properties and high temperature resistance of iron oxide are poor, which will affect the service performance of ceramics.

[0011] In summary, existing solid waste recycling technologies are targeted at specific types of solid waste without starting from the basic oxide units in solid waste, and lack the scientific development mechanism and application plan for solid waste components. Therefore, to realize the recycling of all inorganic solid waste into inorganic non-metallic materials and the recovery of valuable metals in solid waste, a multi-source solid waste collaborative recycling technology is urgently needed. [Prior art documents] [Patent documents]

[0012] [Patent Document 1] China Patent Application Publication No. 114671633 [Patent Document 2] China Patent Application Publication No. 115477502 [Patent Document 3] China Patent Application Publication No. 106630640 [Patent Document 4] China Patent Application Publication No. 112958584 [Patent Document 5] China Patent Application Publication No. 111995436 Summary of the Invention [Problem to be solved by the invention]

[0013] The objective of the present invention is to overcome the deficiencies of existing technology and provide a method for recycling multi-source solid waste based on the combination of calcium oxide, silicon oxide, aluminum oxide and magnesium oxide, which reduces the valuable metals in the solid waste to alloys, utilizes the high value of slag for inorganic non-metallic materials, and completely solves the problem of disposing of multi-source solid waste. [Means for solving the problem]

[0014] The method for recycling multi-source solid waste based on the blending of calcium oxide, silicon oxide, aluminum oxide and magnesium oxide includes the following steps: collecting multi-source solid waste component data; calculating and blending components of calcium oxide, silicon oxide, aluminum oxide and magnesium oxide to obtain inorganic non-metallic raw materials of target components; melting the raw materials to become slag, and carbon, metallic aluminum, aluminum nitride, aluminum carbide, silicon nitride and silicon carbide in the multi-source solid waste serve as reducing agents; the slag provides a high-temperature homogeneous reaction environment and acts as a solvent for reactants; the reducing agents reduce valuable metals in the slag to form alloys, thereby realizing valuable metal recovery; and increasing the value of the slag to be used as inorganic non-metallic materials.

[0015] Furthermore, the unit composition matrices of calcium oxide, silicon oxide, aluminum oxide and magnesium oxide are calculated as follows:

[0016]

number

[0017] Here, P n is the amount (wt%) added in the nth solid waste, Q n-CaO is the CaO content (wt%) in the nth solid waste, Q n-SiO2 is the content (wt%) of SiO2 in the nth solid waste, Q n-Al2O3 is the content (wt%) of Al2O3 in the nth solid waste, Q n-MgO is the content (wt%) of MgO in the nth solid waste, G i is the total content (wt%) of CaO, SiO2, Al2O3 and MgO in the i-th solid waste, α is the CaO content (wt%) in the target mineral phase composition region; β is the SiO2 content (wt%) in the target mineral phase composition region, γ is the Al2O3 content (wt%) in the target mineral phase composition region, δ is the MgO content (wt%) in the target mineral phase composition region; The sum of α, β, γ, and δ is 1.

[0018] Further, the various solid wastes include industrial solid wastes and domestic solid wastes, the industrial solid wastes include, but are not limited to, at least one of desulfurized gypsum, steel slag, magnesium slag, electric furnace slag, waste incineration fly ash, phosphogypsum, blast furnace slag, pickling sludge, waste glass, iron slag, coal fly ash, coal ash, desulfurized manganese slag, aluminum clinker, and red mud, and the domestic solid wastes include, but are not limited to, at least one of waste incineration fly ash, waste incineration bottom ash, and municipal sludge.

[0019] Additionally, the slag provides a high temperature homogeneous reaction environment and acts as a solvent for the reactants, changing the reduction reaction from a solid / solid and solid / liquid heterogeneous reaction to a homogeneous reaction.

[0020] Further, the reducing agent for the multi-source solid waste is selected from at least one of carbon, aluminum metal, aluminum nitride, aluminum carbide, silicon nitride, and silicon carbide.

[0021] Further, the inorganic non-metallic material is selected from at least one of silicate-based inorganic non-metallic materials, aluminate-based inorganic non-metallic materials, aluminosilicate-based inorganic non-metallic materials, and aluminum-magnesium-based inorganic non-metallic materials.

[0022] Furthermore, the method for recycling multi-source solid waste based on the combination of calcium oxide, silicon oxide, aluminum oxide, and magnesium oxide is as follows: S1: Data collection: Collecting multi-source solid waste component data, i.e., determining the contents of CaO, SiO2, Al2O3 and MgO in multi-source solid waste; S2: Determine the target mineral phase composition and solid waste raw materials: Determine the main mineral phase of the slag with high value for use in inorganic non-metallic materials, and determine the target mineral phase composition region based on the ternary phase diagram of CaO-SiO2-Al2O3, CaO-SiO2-MgO, CaO-Al2O3-MgO, SiO2-Al2O3-MgO, i.e., the range of CaO, SiO2, Al2O3, MgO content by weight percentage, and select two or more solid wastes or industrial raw materials as raw materials; S3: Calculate composition and mix: Substitute the composition data of the selected solid waste and the target mineral phase composition data into the composition calculation matrix, solve the matrix, calculate the amount of the selected solid waste to be added, mix and mix to obtain the inorganic non-metallic material raw material of the target composition; S4: Melting: Heating the raw material to 1300-1800 ° C. and then holding the temperature for 1.0-3.0 hours to melt it into slag; S5: Reduction: The slag provides a homogeneous reaction environment at high temperature and acts as a solvent for the reactants, and the reducing agent reduces the valence metals in the slag to alloys; S6: Separation of slag and metal: The alloy is denser than the slag and therefore sinks to the bottom of the slag and is separated from the slag; S7: Slag enrichment: the slag is applied to enrich silicate-based inorganic non-metallic materials, aluminate-based inorganic non-metallic materials, aluminosilicate-based inorganic non-metallic materials, and aluminum-magnesium-based inorganic non-metallic materials according to the target mineral phase composition.

[0023] The principle of the present invention is as follows. (1) Multi-source solid waste contains large amounts of CaO, SiO2, Al2O3, and MgO, which are the main components of the mineral phase, which is the basic unit of inorganic non-metallic materials. The present invention utilizes the resource potential of solid waste, synthesizes CaO, SiO2, Al2O3, and MgO into the target mineral phase by melting, and uses them with high added value in the preparation of inorganic non-metallic materials, thereby realizing the resource potential of all inorganic solid waste. (2) The present invention realizes the cooperative resource utilization of multi-source solid waste through scientific and reasonable composition formulation. According to the composition region of the target mineral phase in the ternary phase diagram of CaO-SiO2-Al2O3, CaO-SiO2-MgO, CaO-Al2O3-MgO (by software FactSage7.0 and more advanced versions) and the contents of CaO, SiO2, Al2O3, MgO of the selected multi-source solid waste, the amount of each solid waste added is determined by carrying out matrix calculation, and the target mineral phase inorganic non-metallic material is accurately prepared from the multi-source solid waste. (3) In the present invention, in order to adjust the contents of CaO, SiO2, Al2O3, and MgO according to the composition requirements of the target inorganic nonmetallic material, the amount of each solid waste added can be adjusted to prepare an inorganic nonmetallic material of any mineral phase. As silicate mineral phases, tricalcium silicate (Ca3SiO5), dicalcium silicate (Ca2SiO4), wollastonite (CaSiO3), wollastonite (Ca3Si2O7), asbestos (CaMg3Si4O 12 ), olivine (Mg2SiO4), etc. As an aluminate mineral phase, dodecaluminate (Ca 12 Al 14 O 33), tricalcium aluminate (Ca3Al2O6), calcium aluminate (CaAl2O4), calcium dialuminate (CaAl4O7), etc. The aluminosilicate mineral phases are calcium-aluminum meliite (Ca2Al2SiO7), calcium feldspar (CaAl2Si2O8), mullite (Al6Si2O 13 ) The aluminum-magnesium salt mineral phase is magnesium-aluminum spinel (MgAl2O4). (4) The Gibbs free energies of the reactions of carbon, metallic aluminum, aluminum nitride, aluminum carbide, silicon nitride, and silicon carbide with V2O5, Cr2O3, MnO, Fe2O3, CoO, NiO, CuO, ZnO, MoO3, CdO, SnO2, and PbO2 are shown in Figure 3. The Gibbs free energies of the reactions of different reducing agents and oxides at different temperatures can be determined, and the reaction equations are shown in equations (1) to (6). As shown in the figure, when the temperature exceeds 1200 ° C, the Gibbs free energies of carbon, metallic aluminum, aluminum nitride, aluminum carbide, silicon carbide in the reduction reaction of V2O5, Fe2O3, CoO, NiO, CuO, ZnO, MoO3, CdO, SnO2, and PbO2 are all below zero, and the Gibbs free energies of the reduction of Cr2O3 and MnO by metallic aluminum, aluminum nitride, aluminum carbide, and silicon nitride are all below zero. Therefore, it is thermodynamically possible to reduce carbon, metallic aluminum, aluminum nitride, aluminum carbide, silicon nitride, and silicon carbide to recover valuable metals. C+2 / yM x O y =2x / yM+CO2(g) (1) Al+3 / 2yM x O y =3x / 2yM+1 / 2Al2O3(2) AlN+3 / 2yM x O y =3x / 2yM+1 / 2Al2O3+1 / 2N2(g) (3) Al4C3+12 / yM x O y =12x / yM+2Al2O3+3CO2(g) (4) Si3N4+6 / yM x O y =6x / yM+3SiO2+2N2(g) (5) SiC+4 / yM x O y =4x / yM+SiO2+CO2(g) (6) (5) The mixture is transformed into slag by melting, and the slag provides a high-temperature uniform reaction environment like an aqueous solution, and acts as a solvent for reactants, and can dissolve valuable metal oxides and aluminum nitride, aluminum carbide, silicon nitride, and silicon carbide. The oxides of valuable metals are converted into slag dissociation of metal cations, aluminum nitride, aluminum carbide, silicon nitride, and silicon carbide are converted into slag complexes of anions containing carbon / nitrogen groups, and the metal cations and anions containing carbon / nitrogen groups are converted into double ion reactions to achieve the transfer of electrons. The reaction process is as shown in Figure 3. Although carbon, metal, and aluminum cannot enter the aluminosilicate slag, the wettability of carbon and slag is good, and the density of aluminum metal and slag is similar to that of slag, so carbon, metal, and aluminum can be mixed with slag. Therefore, carbon and aluminum metal can be in contact with metal cations in slag for a long time. Therefore, it is kinetically feasible to reduce carbon, metal aluminum, aluminum nitride, aluminum carbide, silicon nitride, and silicon carbide to recover valuable metals. Effect of the Invention

[0024] (1) Existing solutions for solid waste recycling are all limited to one or a few kinds of solid waste. The present invention provides a multi-source solid waste recycling method based on the combination of calcium oxide, silicon oxide, aluminum oxide and magnesium oxide, which is universal and applicable to the recycling of all inorganic solid waste. (2) The present invention has the advantages of being able to select an appropriate mineral phase as the basic unit of inorganic non-metallic materials according to the type of solid waste distributed in various places, and is therefore easy to adapt, operate, and industrialize. (3) The existing solid waste dry metallurgy resource utilization input methods are mostly based on experience, not on the basic oxide units of solid waste, and lack the mechanism and method of scientific arrangement of components. The present invention collects the composition data of multi-resource solid waste, and uses matrix calculation to determine the dosing amount (dosage plan) of each solid waste according to the composition range of the target mineral phase of the selected solid waste and the CaO, SiO2, Al2O3, MgO content, so as to realize the accurate preparation of inorganic non-metallic materials of the target mineral phase from multi-resource solid waste. (4) The mechanism of existing solid waste thermal recycling is not clear, and the design scheme is mostly based on experience. The present invention proposes the concept of high-temperature homogeneous reaction environment of aluminosilicate "solution" (slag), and aluminosilicate slag, such as aqueous solution, can dissolve oxides of valuable metals and aluminum nitride, aluminum carbide, silicon nitride, and silicon carbide. The oxides of valuable metals enter the aluminosilicate slag and dissociate into metal cations, and aluminum nitride, aluminum carbide, silicon nitride, and silicon carbide enter the aluminosilicate slag and form anions containing carbon / nitrogen groups, and the metal cations and anions containing carbon / nitrogen groups undergo bipolar ion reactions due to electron transfer. The concept of high-temperature homogeneous reaction environment of aluminosilicate "solution" can provide theoretical guidance for the design of solid waste thermal resources. (5) Existing reducible solid waste (secondary aluminum ash, coal husks, etc.) is reactive, so pile disposal is prone to environmental pollution and fires, and it is difficult to recycle it because it contains a lot of impurities such as alumina and silica. The present invention uses carbon, metallic aluminum, aluminum nitride, aluminum carbide, silicon nitride, and silicon carbide in the reducible solid waste as reducing agents to reduce valuable metals in the solid waste to alloys, thereby realizing the recycling of the reducible solid waste. (6) Most existing solutions for recycling solid waste ignore the recovery of valuable metals, which are absorbed into inorganic non-metallic materials and waste resources. The present invention recovers valuable metals through the reduction of reducible solid waste, which has the effects of green, low carbon, low cost and high yield. (7) In the present invention, the slag of each of silicate-based inorganic nonmetallic materials, aluminate-based inorganic nonmetallic materials, aluminosilicate-based inorganic nonmetallic materials, and aluminum-magnesium-based inorganic nonmetallic materials is added with high added value (increased value) according to the target ore phase composition. [Brief description of the drawings]

[0025] [Figure 1] FIG. 1 is a process flow diagram of the present invention. [Diagram 2] This figure shows the Gibbs free energy of reactions of different substances with V2O5, Cr2O3, MnO, Fe2O3, CoO, NiO, CuO, ZnO, MoO3, CdO, SnO2, and PbO2 versus reaction temperature. The abscissa is reaction temperature, and the ordinate is the Gibbs free energy of reaction. Figure 2(a) shows carbon, Figure 2(b) shows metallic aluminum, Figure 2(c) shows aluminum nitride, Figure 2(d) shows aluminum carbide, Figure 2(e) shows silicon nitride, and Figure 2(f) shows silicon carbide. [Diagram 3] FIG. 1 is a diagram showing a reduction reaction process of valuable metal oxides by aluminum nitride. [Figure 4] FIG. 1 shows the XRD pattern of the aluminate-based inorganic non-metallic material of Example 15. [Diagram 5] FIG. 1 shows the XRD pattern of the aluminate-based inorganic non-metallic material of Example 17. [Figure 6] FIG. 2 shows the XRD pattern of the aluminosilicate inorganic non-metallic material of Example 21. [Figure 7] FIG. 2 is a diagram showing an XRD pattern of the amorphous slag of Comparative Example 1. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] In order to make the objectives, technical solutions and advantages of the present invention clearer and easier to understand, the present invention will be described in more detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described in this specification are only for illustrating the present invention and are not intended to limit the present invention.

[0027] The multi-source solid waste recycling method based on the blending of calcium oxide, silicon oxide, aluminum oxide, and magnesium oxide provided in the embodiment of the present invention includes the steps of collecting multi-source solid waste component data; calculating and blending components of calcium oxide, silicon oxide, aluminum oxide, and magnesium oxide to obtain inorganic non-metallic material raw materials of target components; melting the raw materials to become slag, and the reducing agent in the multi-source solid waste reduces the valuable metals in the slag to form an alloy, thereby realizing valuable metal recovery; and increasing the value of the slag to be used as inorganic non-metallic materials.

[0028] The unit composition matrix of calcium oxide, silicon oxide, aluminum oxide and magnesium oxide is calculated as follows:

[0029]

number

[0030] Here, P n is the amount (wt%) added in the nth solid waste, Q n-CaO is the CaO content (wt%) in the nth solid waste, Q n-SiO2 is the content (wt%) of SiO2 in the nth solid waste, Q n-Al2O3 is the content (wt%) of Al2O3 in the nth solid waste, Q n-MgO is the content (wt%) of MgO in the nth solid waste, G iis the total content (wt%) of CaO, SiO2, Al2O3 and MgO in the i-th solid waste, α is the CaO content (wt%) in the target mineral phase composition region; β is the SiO2 content (wt%) in the target mineral phase composition region, γ is the Al2O3 content (wt%) in the target mineral phase composition region, δ is the MgO content (wt%) in the target mineral phase composition region; The sum of α, β, γ, and δ is 1. EXAMPLES

[0031] Using waste incineration fly ash, waste incineration bottom ash and coal waste as raw materials, silicate-based inorganic nonmetallic materials with tricalcium silicate (Ca3SiO5) as the main mineral phase were prepared. Composition data of multi-source solid waste was collected (see Table 1). A CaO-SiO2-Al2O3 phase diagram containing tricalcium silicate phase was selected, the composition range of tricalcium silicate was read from the phase diagram, and the content of impurity MgO was restricted to determine the contents of CaO, SiO2, Al2O3 and MgO as 65.0-75.0wt.%, 15.0-25.0wt.%, 0-10.0wt.% and 0-10.0wt.%, respectively. The composition data of waste incineration fly ash, waste incineration bottom ash and coal waste and the composition data of tricalcium silicate were substituted into the composition calculation matrix.

[0032]

number

[0033] Then, the matrix is ​​solved to obtain the additive amounts P of waste incineration fly ash, waste incineration bottom ash, and coal waste. 廃棄物焼却飛灰 , P 廃棄物焼却ボトムアッシュ , P 石炭廃棄物were set to 90.8wt.%, 1.7wt.%, and 7.5wt.%, respectively. The raw materials were mixed uniformly to obtain a mixture. The mixture was heated to 1800℃ and held for 3 hours to produce molten slag. The valuable metals in the carbon-reduced slag from the coal waste are alloys. The slag high-value is utilized for silicate-based inorganic nonmetallic materials.

[0034] [Table 1] EXAMPLES

[0035] Using waste incineration fly ash, waste incineration bottom ash and coal waste as raw materials, silicate-based inorganic nonmetallic materials with tricalcium silicate (Ca3SiO5) as the main mineral phase were prepared. Composition data of multi-source solid waste was collected (see Table 1). A CaO-SiO2-Al2O3 phase diagram containing tricalcium silicate phase was selected, the composition range of tricalcium silicate was read from the phase diagram, and the content of impurity MgO was restricted to determine the contents of CaO, SiO2, Al2O3 and MgO as 65.0-75.0wt.%, 15.0-25.0wt.%, 0-10.0wt.% and 0-10.0wt.%, respectively. The composition data of waste incineration fly ash, waste incineration bottom ash and coal waste and the composition data of tricalcium silicate were substituted into the composition calculation matrix.

[0036]

number

[0037] Then, the matrix is ​​solved to obtain the additive amounts P of waste incineration fly ash, waste incineration bottom ash, and coal waste. 廃棄物焼却飛灰 , P 廃棄物焼却ボトムアッシュ , P 石炭廃棄物 were set to 83.2wt.%, 12.9wt.%, and 3.9wt.%, respectively. The raw materials were mixed uniformly to obtain a mixture. The mixture was heated to 1760°C and held for 2.5 hours to obtain molten slag. The valuable metals in the carbon-reduced slag from the coal waste are alloys. The slag is used for silicate-based inorganic nonmetallic materials. EXAMPLES

[0038] Using desulfurized gypsum, steel slag and coal waste as raw materials, silicate-based inorganic nonmetallic materials with dicalcium silicate (Ca2SiO4) as the main mineral phase were prepared. Composition data of multi-source solid waste was collected (see Table 1). A CaO-SiO2-Al2O3 phase diagram containing dicalcium silicate phase was selected, the composition range of dicalcium silicate was read from the phase diagram, and the content of impurity MgO was restricted to determine the contents of CaO, SiO2, Al2O3 and MgO as 55.0-65.0wt.%, 25.0-35.0wt.%, 0-10.0wt.% and 0-10.0wt.%, respectively. The composition data of desulfurized gypsum, steel slag and coal waste and the composition data of dicalcium silicate were substituted into the composition calculation matrix.

[0039]

number

[0040] Then, the matrix is ​​solved to obtain the amount of desulfurized gypsum, steel slag, and coal waste added, P 脱硫石膏 , P 鉄鋼スラグ , P 石炭廃棄物 were set to 33.1wt.%, 41.7wt.%, and 25.2wt.%, respectively. The raw materials were mixed uniformly to obtain a mixture. The mixture was heated to 1750℃ and held for 2 hours to obtain molten slag. The valuable metals in the carbon-reduced slag from the coal waste are alloys. The slag value increase is utilized for silicate-based inorganic nonmetallic materials. EXAMPLES

[0041] Using desulfurized gypsum, steel slag and coal waste as raw materials, silicate-based inorganic nonmetallic materials with dicalcium silicate (Ca2SiO4) as the main mineral phase were prepared. Composition data of multi-source solid waste was collected (see Table 1). A CaO-SiO2-Al2O3 phase diagram containing dicalcium silicate phase was selected, the composition range of dicalcium silicate was read from the phase diagram, and the content of impurity MgO was restricted to determine the contents of CaO, SiO2, Al2O3 and MgO as 55.0-65.0wt.%, 25.0-35.0wt.%, 0-10.0wt.% and 0-10.0wt.%, respectively. The composition data of desulfurized gypsum, steel slag and coal waste and the composition data of dicalcium silicate were substituted into the composition calculation matrix.

[0042]

number

[0043] Then, the matrix is ​​solved to obtain the amount of desulfurized gypsum, steel slag, and coal waste added, P 脱硫石膏 , P 鉄鋼スラグ , P 石炭廃棄物 were set to 13.3wt.%, 69.2wt.%, and 17.5wt.%, respectively. The raw materials were mixed uniformly to obtain a mixture. The mixture was heated to 1750°C and held for 1 hour to form molten slag. The valuable metals in the carbon-reduced slag from the coal waste are alloys. The slag value increase is utilized for silicate-based inorganic nonmetallic materials. EXAMPLES

[0044] Using steel slag, waste incineration bottom ash and coal waste as raw materials, silicate-based inorganic nonmetallic materials with wollastonite (Ca3Si2O7) as the main mineral phase were prepared. The composition data of multi-source solid waste was collected (see Table 1). The CaO-SiO2-Al2O3 phase diagram containing the wollastonite phase was selected, the composition range of wollastonite was read from the phase diagram, and the content of impurity MgO was restricted to determine the contents of CaO, SiO2, Al2O3 and MgO as 48.0-58.0wt.%, 32.0-42.0wt.%, 0-10.0wt.% and 0-10.0wt.%, respectively. The composition data of steel slag, waste incineration bottom ash and coal waste and the composition data of wollastonite were substituted into the composition calculation matrix.

[0045]

number

[0046] Then, the matrix is ​​solved to obtain the additive amounts P of steel slag, waste incineration bottom ash, and coal waste. 鉄鋼スラグ , P 廃棄物焼却ボトムアッシュ , P 石炭廃棄物 were set to 72.2wt.%, 10.8wt.%, and 17wt.%, respectively. The raw materials were mixed uniformly to obtain a mixture. The mixture was heated to 1600°C and held for 1.5 hours to obtain molten slag. The valuable metals in the carbon-reduced slag from the coal waste are alloys. The slag is used for silicate-based inorganic nonmetallic materials. EXAMPLES

[0047] Using steel slag, waste incineration bottom ash and coal waste as raw materials, silicate-based inorganic nonmetallic materials with wollastonite (Ca3Si2O7) as the main mineral phase were prepared. The composition data of multi-source solid waste was collected (see Table 1). The CaO-SiO2-Al2O3 phase diagram containing the wollastonite phase was selected, the composition range of wollastonite was read from the phase diagram, and the content of impurity MgO was restricted to determine the contents of CaO, SiO2, Al2O3 and MgO as 48.0-58.0wt.%, 32.0-42.0wt.%, 0-10.0wt.% and 0-10.0wt.%, respectively. The composition data of steel slag, waste incineration bottom ash and coal waste and the composition data of wollastonite were substituted into the composition calculation matrix.

[0048]

number

[0049] Then, the matrix is ​​solved to obtain the additive amounts P of steel slag, waste incineration bottom ash, and coal waste. 鉄鋼スラグ , P 廃棄物焼却ボトムアッシュ , P 石炭廃棄物 were set to 58.8wt.%, 32.2wt.%, and 8wt.%, respectively. The raw materials were mixed uniformly to obtain a mixture. The mixture was heated to 1520℃ and held for 1 hour to produce molten slag. The valuable metals in the carbon-reduced slag from the coal waste are alloys. The slag high-value is utilized for silicate-based inorganic nonmetallic materials. EXAMPLES

[0050] Using waste incineration fly ash, waste glass and coal waste as raw materials, silicate-based inorganic nonmetallic materials with wollastonite (CaSiO3) as the main mineral phase were prepared. Composition data of multi-source solid waste was collected (see Table 1). A CaO-SiO2-Al2O3 phase diagram containing the wollastonite phase was selected, the composition range of wollastonite was read from the phase diagram, and the content of impurity MgO was restricted to determine the contents of CaO, SiO2, Al2O3 and MgO as 38.0-48.0wt.%, 42.0-52.0wt.%, 0-10.0wt.% and 0-10.0wt.%, respectively. The composition data of waste incineration fly ash, waste glass and coal waste and the composition data of wollastonite were substituted into the composition calculation matrix.

[0051]

number

[0052] Then, the matrix is ​​solved to obtain the additive amount P of waste incineration fly ash, waste glass and coal waste. 廃棄物焼却飛灰 , P 廃ガラス , P 石炭廃棄物 were set to 60.5wt.%, 32.7wt.%, and 6.8wt.%, respectively. The raw materials were mixed uniformly to obtain a mixture. The mixture was heated to 1450℃ and held for 2 hours to produce molten slag. The valuable metals in the carbon-reduced slag from the coal waste are alloys. The slag high-value is utilized for silicate-based inorganic nonmetallic materials. EXAMPLES

[0053] Using waste incineration fly ash, waste glass and coal waste as raw materials, silicate-based inorganic nonmetallic materials with wollastonite (CaSiO3) as the main mineral phase were prepared. Composition data of multi-source solid waste was collected (see Table 1). A CaO-SiO2-Al2O3 phase diagram containing the wollastonite phase was selected, the composition range of wollastonite was read from the phase diagram, and the content of impurity MgO was restricted to determine the contents of CaO, SiO2, Al2O3 and MgO as 38.0-48.0wt.%, 42.0-52.0wt.%, 0-10.0wt.% and 0-10.0wt.%, respectively. The composition data of waste incineration fly ash, waste glass and coal waste and the composition data of wollastonite were substituted into the composition calculation matrix.

[0054]

number

[0055] Then, the matrix is ​​solved to obtain the additive amount P of waste incineration fly ash, waste glass and coal waste. 廃棄物焼却飛灰 , P 廃ガラス , P 石炭廃棄物 were set to 58wt.%, 28.2wt.%, and 13.8wt.%, respectively. The raw materials were mixed uniformly to obtain a mixture. The mixture was heated to 1410℃ and held for 1 hour to produce molten slag. The valuable metals in the carbon-reduced slag from the coal waste are alloys. The slag is used for silicate-based inorganic nonmetallic materials. EXAMPLES

[0056] Using waste glass, coal waste and industrial magnesium oxide as raw materials, silicate-based inorganic nonmetallic materials with olivine (Mg2SiO4) as the main mineral phase were prepared. Composition data of multi-source solid waste was collected (see Table 1). A CaO-SiO2-MgO phase diagram containing olivine phase was selected, the composition range of olivine was read from the phase diagram, and the content of impurity Al2O3 was restricted to determine the contents of CaO, SiO2, Al2O3 and MgO as 0-10.0wt.%, 33.0-43.0wt.%, 0-10.0wt.%, and 47.0-57.0wt.%, respectively. The composition data of waste glass, coal waste and industrial magnesium oxide and the composition data of olivine were substituted into the composition calculation matrix.

[0057]

number

[0058] Then, the matrix is ​​solved to obtain the additive amounts P of waste glass, coal waste, and industrial magnesium oxide. 廃ガラス , P 石炭廃棄物 , P 工業用酸化マグネシウム were set to 30.2wt.%, 23.9wt.%, and 45.9wt.%, respectively. The raw materials were mixed uniformly to obtain a mixture. The mixture was heated to 1700°C and held for 1.5 hours to obtain molten slag. The valuable metals in the carbon-reduced slag from the coal waste are alloys. The slag is used for silicate-based inorganic nonmetallic materials. EXAMPLES

[0059] Using waste glass, coal waste and industrial magnesium oxide as raw materials, silicate-based inorganic nonmetallic materials with olivine (Mg2SiO4) as the main mineral phase were prepared. Composition data of multi-source solid waste was collected (see Table 1). A CaO-SiO2-MgO phase diagram containing olivine phase was selected, the composition range of olivine was read from the phase diagram, and the content of impurity Al2O3 was restricted to determine the contents of CaO, SiO2, Al2O3 and MgO as 0-10.0wt.%, 33.0-43.0wt.%, 0-10.0wt.%, and 47.0-57.0wt.%, respectively. The composition data of waste glass, coal waste and industrial magnesium oxide and the composition data of olivine were substituted into the composition calculation matrix.

[0060]

number

[0061] Then, the matrix is ​​solved to obtain the additive amounts P of waste glass, coal waste, and industrial magnesium oxide. 廃ガラス , P 石炭廃棄物 , P 工業用酸化マグネシウム were set to 40.1wt.%, 12.7wt.%, and 46.2wt.%, respectively. The raw materials were mixed uniformly to obtain a mixture. The mixture was heated to 1620°C and held for 1.0 hour to obtain molten slag. The valuable metals in the carbon-reduced slag from the coal waste are alloys. The slag value increase is utilized for silicate-based inorganic nonmetallic materials. EXAMPLES

[0062] Asbestos (CaMg3Si4O 12A silicate-based inorganic nonmetallic material with asbestos as the main mineral phase was prepared. Composition data of multi-source solid waste was collected (see Table 1). A CaO-SiO2-MgO phase diagram including the asbestos phase was selected, the composition range of asbestos was read from the phase diagram, and the content of impurity Al2O3 was restricted to determine the contents of CaO, SiO2, Al2O3, and MgO as 6.0-16.0 wt.%, 51.0-61.0 wt.%, 0-10.0 wt.%, and 22.0-32.0 wt.%, respectively. The composition data of coal waste, waste glass, urban sludge, and industrial magnesium oxide and the composition data of asbestos were substituted into the composition calculation matrix.

[0063]

number

[0064] Then, the matrix is ​​solved to obtain the additive amounts P of coal waste, waste glass, urban sludge and industrial magnesium oxide. 石炭廃棄物 , P 廃ガラス , P 市街地汚泥 , P 工業用酸化マグネシウム were set to 5.9wt.%, 48.9wt.%, 24.0wt.% and 21.2wt.%, respectively. The raw materials were mixed uniformly to obtain a mixture. The mixture was heated to 1500℃ and held for 2.0 hours to obtain molten slag. The valuable metals in the carbon-reduced slag from the coal waste are alloys. The slag value increase is utilized for silicate-based inorganic nonmetallic materials. EXAMPLES

[0065] Asbestos (CaMg3Si4O 12A silicate-based inorganic nonmetallic material with asbestos as the main mineral phase was prepared. Composition data of multi-source solid waste was collected (see Table 1). A CaO-SiO2-MgO phase diagram including the asbestos phase was selected, the composition range of asbestos was read from the phase diagram, and the content of impurity Al2O3 was restricted to determine the contents of CaO, SiO2, Al2O3, and MgO as 6.0-16.0 wt.%, 51.0-61.0 wt.%, 0-10.0 wt.%, and 22.0-32.0 wt.%, respectively. The composition data of coal waste, waste glass, urban sludge, and industrial magnesium oxide and the composition data of asbestos were substituted into the composition calculation matrix.

[0066]

number

[0067] Then, the matrix is ​​solved to obtain the additive amounts P of coal waste, waste glass, urban sludge and industrial magnesium oxide. 石炭廃棄物 , P 廃ガラス , P 市街地汚泥 , P 工業用酸化マグネシウム were set to 3.0wt.%, 53.0wt.%, 22.8wt.% and 21.2wt.%, respectively. The raw materials were mixed uniformly to obtain a mixture. The mixture was heated to 1470℃ and held for 1.0 hour to obtain molten slag. The valuable metals in the carbon-reduced slag from the coal waste are alloys. The slag value increase is utilized for silicate-based inorganic nonmetallic materials. EXAMPLES

[0068] Using desulfurized gypsum and aluminum clinker as raw materials, an aluminate-based inorganic nonmetallic material with tricalcium aluminate (Ca3Al2O6) as the main mineral phase was prepared. Composition data of multi-source solid waste was collected (see Table 1). A CaO-SiO2-MgO phase diagram containing tricalcium aluminate phase was selected, the composition range of tricalcium aluminate was read from the phase diagram, and the content of impurity MgO was restricted to determine the contents of CaO, SiO2, Al2O3, and MgO as 52.0-62.0wt.%, 0-10.0wt.%, 28.0-38.0wt.%, and 0-10.0wt.%, respectively. The composition data of desulfurized gypsum and aluminum clinker and the composition data of tricalcium aluminate were substituted into the composition calculation matrix.

[0069]

number

[0070] Then, the matrix is ​​dissolved to determine the amount of desulfurized gypsum and aluminum clinker added, P 脱硫石膏 , P アルミニウムクリンカ were 64.0wt.% and 36wt.%, respectively. The raw materials were mixed uniformly to obtain a mixture. The mixture was heated to 1700℃ and held for 3.0 hours to obtain molten slag. The aluminum nitride and aluminum carbide in the aluminum clinker and the metal in the metallic aluminum reduction slag are alloys. High-value slag is utilized for aluminate-based inorganic nonmetallic materials. EXAMPLES

[0071] Using desulfurized gypsum and aluminum clinker as raw materials, an aluminate-based inorganic nonmetallic material with tricalcium aluminate (Ca3Al2O6) as the main mineral phase was prepared. Composition data of multi-source solid waste was collected (see Table 1). A CaO-SiO2-MgO phase diagram containing tricalcium aluminate phase was selected, the composition range of tricalcium aluminate was read from the phase diagram, and the content of impurity MgO was restricted to determine the contents of CaO, SiO2, Al2O3, and MgO as 52.0-62.0wt.%, 0-10.0wt.%, 28.0-38.0wt.%, and 0-10.0wt.%, respectively. The composition data of desulfurized gypsum and aluminum clinker and the composition data of tricalcium aluminate were substituted into the composition calculation matrix.

[0072]

number

[0073] Then, the matrix is ​​dissolved to determine the amount of desulfurized gypsum and aluminum clinker added, P 脱硫石膏 , P アルミニウムクリンカ were 66.0wt.% and 34wt.%, respectively. The raw materials were mixed uniformly to obtain a mixture. The mixture was heated to 1620℃ and held for 2.5 hours to obtain molten slag. The aluminum nitride and aluminum carbide in the aluminum clinker and the metal in the metallic aluminum reduction slag are alloys. High-value slag is utilized for aluminate-based inorganic nonmetallic materials. EXAMPLES

[0074] Waste incineration fly ash and aluminum clinker were used as raw materials to produce dodecaluminate (Ca 12 Al 14 O 33Aluminate-based inorganic nonmetallic materials with dodecalcium heptaaluminate as the main mineral phase were prepared. Composition data of multi-source solid waste was collected (see Table 1). A CaO-SiO2-MgO phase diagram containing dodecalcium heptaaluminate phase was selected, the composition range of dodecalcium heptaaluminate was read from the phase diagram, and the content of impurity MgO was restricted to determine the contents of CaO, SiO2, Al2O3, and MgO as 38.0-48.0 wt.%, 0-10.0 wt.%, 42.0-52.0 wt.%, and 0-10.0 wt.%, respectively. The composition data of waste incineration fly ash and aluminum clinker and the composition data of dodecalcium heptaaluminate were substituted into the composition calculation matrix.

[0075]

number

[0076] Then, the matrix is ​​solved to obtain the additive amount P of waste incineration fly ash and aluminum clinker. 廃棄物焼却飛灰 , P アルミニウムクリンカ were 62.0wt.% and 38wt.%, respectively. The raw materials were mixed uniformly to obtain a mixture. The mixture was heated to 1500°C and held for 3.0 hours to obtain molten slag. The aluminum nitride in the aluminum clinker, the aluminum carbide, and the metal in the metallic aluminum reduction slag are alloys. The high-value slag is utilized for aluminate-based inorganic nonmetallic materials. The obtained alloy is an iron-zinc alloy, with an iron content of 86.0wt.% and a zinc content of 14.0wt.%. Figure 4 shows the XRD pattern of the obtained aluminate-based inorganic nonmetallic material, and its main crystal phase is dodeca-calcium aluminate (Ca 12 Al 14 O 33 ) and the content of the main crystalline phase is 92.0 wt.%. EXAMPLES

[0077] Waste incineration fly ash and aluminum clinker were used as raw materials to produce dodecaluminate (Ca 12 Al 14 O 33Aluminate-based inorganic nonmetallic materials with dodecalcium heptaaluminate as the main mineral phase were prepared. Composition data of multi-source solid waste was collected (see Table 1). A CaO-SiO2-MgO phase diagram containing dodecalcium heptaaluminate phase was selected, the composition range of dodecalcium heptaaluminate was read from the phase diagram, and the content of impurity MgO was restricted to determine the contents of CaO, SiO2, Al2O3, and MgO as 38.0-48.0 wt.%, 0-10.0 wt.%, 42.0-52.0 wt.%, and 0-10.0 wt.%, respectively. The composition data of waste incineration fly ash and aluminum clinker and the composition data of dodecalcium heptaaluminate were substituted into the composition calculation matrix.

[0078]

number

[0079] Then, the matrix is ​​solved to obtain the additive amount P of waste incineration fly ash and aluminum clinker. 廃棄物焼却飛灰 , P アルミニウムクリンカ were 61.0wt.% and 39wt.%, respectively. The raw materials were mixed uniformly to obtain a mixture. The mixture was heated to 1460℃ and held for 2.0 hours to obtain molten slag. The aluminum nitride and aluminum carbide in the aluminum clinker and the metal in the metallic aluminum reduction slag are alloys. High-value slag is utilized for aluminate-based inorganic nonmetallic materials. EXAMPLES

[0080] Using apple gypsum and aluminum clinker as raw materials, an aluminate-based inorganic nonmetallic material with calcium dialuminate (CaAl4O7) as the main mineral phase was prepared. The composition data of multi-source solid waste was collected (see Table 1). The CaO-SiO2-Al2O3 phase diagram containing calcium dialuminate was selected, the composition range of calcium dialuminate was read from the phase diagram, and the content of impurity MgO was restricted to determine the contents of CaO, SiO2, Al2O3, and MgO as 12.0-22.0wt.%, 0-10.0wt.%, 68.0-78.0wt.%, and 0-10.0wt.%, respectively. The composition data of apple gypsum and aluminum clinker and the composition data of calcium dialuminate were substituted into the composition calculation matrix.

[0081]

number

[0082] Then, the matrix is ​​solved to determine the amount of apple gypsum and aluminum clinker added, P リンゴ石膏 , P アルミニウムクリンカ were 31.0wt.% and 69.0wt.%, respectively. The raw materials were mixed uniformly to obtain a mixture. The mixture was heated to 1700℃ and then held for 3 hours to obtain molten slag. The valuable metals in the carbon-reduced slag from the coal waste are alloys. The slag value increase is utilized for silicate-based inorganic nonmetallic materials. The obtained alloy is an iron-zinc-copper alloy, with an iron content of 84.0wt.%, a zinc content of 10.0wt.%, and a copper content of 6.0wt.%. Figure 5 shows the XRD pattern of the obtained aluminate-based inorganic nonmetallic material, whose main crystalline phase is calcium dialuminate (CaAl4O7) and whose main crystalline phase content is 85.0wt.%. EXAMPLES

[0083] Using apple gypsum and aluminum clinker as raw materials, an aluminate-based inorganic nonmetallic material with calcium dialuminate (CaAl4O7) as the main mineral phase was prepared. The composition data of multi-source solid waste was collected (see Table 1). The CaO-SiO2-Al2O3 phase diagram containing calcium dialuminate was selected, the composition range of calcium dialuminate was read from the phase diagram, and the content of impurity MgO was restricted to determine the contents of CaO, SiO2, Al2O3, and MgO as 12.0-22.0wt.%, 0-10.0wt.%, 68.0-78.0wt.%, and 0-10.0wt.%, respectively. The composition data of apple gypsum and aluminum clinker and the composition data of calcium dialuminate were substituted into the composition calculation matrix.

[0084]

number

[0085] Then, the matrix is ​​solved to determine the amount of apple gypsum and aluminum clinker added, P リンゴ石膏 , P アルミニウムクリンカ were set to 33.0wt.% and 67.0wt.%, respectively. The raw materials were mixed uniformly to obtain a mixture. The mixture was heated to 1620℃ and held for 2.5 hours to obtain molten slag. Valuable metals in the carbon-reduced slag from coal waste are alloys. The slag is used for silicate-based inorganic nonmetallic materials. EXAMPLES

[0086] Using waste incineration fly ash and aluminum clinker as raw materials, an aluminate-based inorganic nonmetallic material with calcium aluminate (CaAl2O7) as the main mineral phase was prepared. Composition data of multi-source solid waste was collected (see Table 1). A CaO-SiO2-MgO phase diagram containing calcium aluminate phase was selected, the composition range of calcium aluminate was read from the phase diagram, and the content of impurity MgO was restricted to determine the contents of CaO, SiO2, Al2O3, and MgO as 25.0-35.0 wt.%, 0-10.0 wt.%, 55.0-65.0 wt.%, and 0-10.0 wt.%, respectively. The composition data of waste incineration fly ash and aluminum clinker and the composition data of calcium aluminate were substituted into the composition calculation matrix.

[0087]

number

[0088] Then, the matrix is ​​solved to obtain the additive amount P of waste incineration fly ash and aluminum clinker. 廃棄物焼却飛灰 , P アルミニウムクリンカ were set to 45.0wt.% and 55wt.%, respectively. The raw materials were mixed uniformly to obtain a mixture. The mixture was heated to 1600℃ and held for 3.0 hours to obtain molten slag. The aluminum nitride and aluminum carbide in the aluminum clinker and the metal in the metallic aluminum reduction slag are alloys. High-value slag is utilized for aluminate-based inorganic nonmetallic materials. EXAMPLES

[0089] Using waste incineration fly ash and aluminum clinker as raw materials, an aluminate-based inorganic nonmetallic material with calcium aluminate (CaAl2O7) as the main mineral phase was prepared. Composition data of multi-source solid waste was collected (see Table 1). A CaO-SiO2-MgO phase diagram containing calcium aluminate phase was selected, the composition range of calcium aluminate was read from the phase diagram, and the content of impurity MgO was restricted to determine the contents of CaO, SiO2, Al2O3, and MgO as 25.0-35.0 wt.%, 0-10.0 wt.%, 55.0-65.0 wt.%, and 0-10.0 wt.%, respectively. The composition data of waste incineration fly ash and aluminum clinker and the composition data of calcium aluminate were substituted into the composition calculation matrix.

[0090]

number

[0091] Then, the matrix is ​​solved to obtain the additive amount P of waste incineration fly ash and aluminum clinker. 廃棄物焼却飛灰 , P アルミニウムクリンカ were 46.0wt.% and 54wt.%, respectively. The raw materials were mixed uniformly to obtain a mixture. The mixture was heated to 1520℃ and held for 2.0 hours to obtain molten slag. The aluminum nitride and aluminum carbide in the aluminum clinker and the metal in the metallic aluminum reduction slag are alloys. High-value slag is utilized for aluminate-based inorganic nonmetallic materials. EXAMPLES

[0092] Aluminosilicate inorganic nonmetallic materials with calcium aluminum yellow feldspar (Ca2Al2SiO7) as the main mineral phase were prepared using desulfurized gypsum, magnesium slag, hot plate slag and aluminum clinker as raw materials. The composition data of multi-source solid waste was collected (see Table 1). The CaO-SiO2-MgO phase diagram containing calcium aluminum yellow feldspar phase was selected, the composition range of calcium aluminum yellow feldspar was read from the phase diagram, and the content of impurity MgO was restricted to determine the contents of CaO, SiO2, Al2O3 and MgO as 34.0-44.0wt.%, 15.0-25.0wt.%, 30.0-40.0wt.%, and 0-10.0wt.%, respectively. The composition data of desulfurized gypsum, magnesium slag, hot plate slag and aluminum clinker and the composition data of calcium aluminum yellow feldspar were substituted into the composition calculation matrix.

[0093]

number

[0094] Then, the matrix was dissolved and the desulfurized gypsum, magnesium slag, hot plate slag and aluminum clinker were added in the amount of P 脱硫石膏 , P マグネシウムスラグ , P ホットプレート·スラグ、 P アルミニウムクリンカ were 14.7wt.%, 23.9wt.%, 22.6wt.% and 38.8wt.%, respectively. The raw materials were mixed uniformly to obtain a mixture. The mixture was heated to 1400℃ and then held for 3.0 hours to obtain molten slag. The aluminum nitride in the aluminum clinker, the aluminum carbide, and the metal in the metallic aluminum reduction slag are alloys. The slag enhancement is utilized for aluminate-based inorganic nonmetallic materials. The obtained alloy is an iron-chromium-zinc alloy, with an iron content of 82.0wt.%, a chromium content of 11.0wt.%, and a zinc content of 7.0wt.%. Figure 6 shows the XRD pattern of the obtained aluminosilicate-based inorganic nonmetallic material, whose main crystalline phase is calcium aluminum yellow feldspar (Ca2Al2SiO7) and whose main crystalline phase content is 89.0wt.%. EXAMPLES

[0095] Aluminosilicate inorganic nonmetallic materials with calcium aluminum yellow feldspar (Ca2Al2SiO7) as the main mineral phase were prepared using desulfurized gypsum, magnesium slag, hot plate slag and aluminum clinker as raw materials. The composition data of multi-source solid waste was collected (see Table 1). The CaO-SiO2-MgO phase diagram containing calcium aluminum yellow feldspar phase was selected, the composition range of calcium aluminum yellow feldspar was read from the phase diagram, and the content of impurity MgO was restricted to determine the contents of CaO, SiO2, Al2O3 and MgO as 34.0-44.0wt.%, 15.0-25.0wt.%, 30.0-40.0wt.%, and 0-10.0wt.%, respectively. The composition data of desulfurized gypsum, magnesium slag, hot plate slag and aluminum clinker and the composition data of calcium aluminum yellow feldspar were substituted into the composition calculation matrix.

[0096]

number

[0097] Then, the matrix was dissolved and the desulfurized gypsum, magnesium slag, hot plate slag and aluminum clinker were added in the amount of P 脱硫石膏 , P マグネシウムスラグ , P ホットプレート·スラグ、 P アルミニウムクリンカ were set to 21.4wt.%, 36.5wt.%, 2.6wt.% and 39.5wt.%, respectively. The raw materials were mixed uniformly to obtain a mixture. The mixture was heated to 1300℃ and held for 2.5 hours to obtain molten slag. The aluminum nitride and aluminum carbide in the aluminum clinker and the metal in the metallic aluminum reduction slag are alloys. The high-value slag is utilized for aluminate-based inorganic nonmetallic materials. EXAMPLES

[0098] Aluminosilicate inorganic nonmetallic materials with calcium feldspar (CaAl2Si2O8) as the main mineral phase were prepared using iron tailings, magnesium slag, hot plate slag and aluminum clinker as raw materials. The composition data of multi-source solid waste was collected (see Table 1). The CaO-SiO2-MgO phase diagram containing calcium feldspar phase was selected, the composition range of calcium feldspar was read from the phase diagram, and the content of impurity MgO was restricted to determine the contents of CaO, SiO2, Al2O3 and MgO as 13.0-23.0wt.%, 36.0-46.0wt.%, 30.0-40.0wt.%, and 0-10.0wt.%, respectively. The composition data of iron tailings, magnesium slag, hot plate slag and aluminum clinker and the composition data of calcium feldspar were substituted into the composition calculation matrix.

[0099]

number

[0100] Then, the matrix was dissolved and the iron tailings, magnesium slag, hot plate slag and aluminum clinker were added in the amount of P 鉄尾鉱 , P マグネシウムスラグ , P ホットプレート·スラグ、 P アルミニウムクリンカ were 38.5wt.%, 20.3wt.%, 8.4wt.% and 32.8wt.%, respectively. The raw materials were mixed uniformly to obtain a mixture. The mixture was heated to 1450℃ and held for 2.0 hours to obtain molten slag. The aluminum nitride and aluminum carbide in the aluminum clinker and the metal in the metallic aluminum reduction slag are alloys. The high-value slag is utilized for aluminate-based inorganic nonmetallic materials. EXAMPLES

[0101] Aluminosilicate inorganic nonmetallic materials with calcium feldspar (CaAl2Si2O8) as the main mineral phase were prepared using iron tailings, magnesium slag, hot plate slag and aluminum clinker as raw materials. The composition data of multi-source solid waste was collected (see Table 1). The CaO-SiO2-MgO phase diagram containing calcium feldspar phase was selected, the composition range of calcium feldspar was read from the phase diagram, and the content of impurity MgO was restricted to determine the contents of CaO, SiO2, Al2O3 and MgO as 13.0-23.0wt.%, 36.0-46.0wt.%, 30.0-40.0wt.%, and 0-10.0wt.%, respectively. The composition data of iron tailings, magnesium slag, hot plate slag and aluminum clinker and the composition data of calcium feldspar were substituted into the composition calculation matrix.

[0102]

number

[0103] Then, the matrix was dissolved and the iron tailings, magnesium slag, hot plate slag and aluminum clinker were added in the amount of P 鉄尾鉱 , P マグネシウムスラグ , P ホットプレート·スラグ、 P アルミニウムクリンカ were 42.1wt.%, 1.4wt.%, 26.9wt.% and 29.6wt.%, respectively. The raw materials were mixed uniformly to obtain a mixture. The mixture was heated to 1410℃ and held for 1.0 hour to obtain molten slag. The aluminum nitride and aluminum carbide in the aluminum clinker and the metal in the metallic aluminum reduction slag are alloys. The high-value slag is utilized for aluminate-based inorganic nonmetallic materials. EXAMPLES

[0104] Mullite (Al6Si2O 13Aluminosilicate inorganic nonmetallic materials with mullite as the main mineral phase were prepared. Composition data of multi-source solid waste was collected (see Table 1). A CaO-SiO2-MgO phase diagram containing mullite phase was selected, the composition range of mullite was read from the phase diagram, and the content of impurity MgO was restricted to determine the contents of CaO, SiO2, Al2O3, and MgO as 0-10.0 wt.%, 18.0-28.0 wt.%, 62.0-72.0 wt.%, and 0-10.0 wt.%, respectively. The composition data of iron tailings, fly ash, and aluminum clinker and the composition data of mullite were substituted into the composition calculation matrix.

[0105]

number

[0106] Then, the matrix is ​​solved to obtain the amount of iron tailings, fly ash and aluminum clinker added, P 鉄尾鉱 , P フライアッシュ , P アルミニウムクリンカ were set to 21.8wt.%, 8.2wt.% and 70.0wt.%, respectively. The raw materials were mixed uniformly to obtain a mixture. The mixture was heated to 1800℃ and held for 1.5 hours to obtain molten slag. The aluminum nitride and aluminum carbide in the aluminum clinker and the metal in the metallic aluminum reduction slag are alloys. The high-value slag is utilized for aluminate-based inorganic nonmetallic materials. EXAMPLES

[0107] Using aluminum clinker and industrial magnesium oxide as raw materials, an aluminosilicate inorganic nonmetallic material with magnesium-aluminum spinel (MgAl2O4) as the main mineral phase was prepared. The composition data of multi-source solid waste was collected (see Table 1). The CaO-SiO2-MgO phase diagram containing the magnesium-aluminum spinel phase was selected, the composition range of magnesium-aluminum spinel was read from the phase diagram, and the content of impurity SiO2 was restricted to determine the contents of CaO, SiO2, Al2O3, and MgO as 0-10.0 wt.%, 0-10.0 wt.%, 62.0-72.0 wt.%, and 18.0-28.0 wt.%, respectively. The composition data of aluminum clinker and industrial magnesium oxide and the composition data of magnesium-aluminum spinel were substituted into the composition calculation matrix.

[0108]

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[0109] Then, the matrix is ​​solved to obtain the additive amount P of aluminum clinker and industrial magnesium oxide. アルミニウムクリンカ、 P 工業用酸化マグネシウム were set to 79.0 wt.% and 21.0 wt.%, respectively. The raw materials were mixed uniformly to obtain a mixture. The mixture was heated to 1800°C and held for 3.0 hours to obtain molten slag. The aluminum nitride and aluminum carbide in the aluminum clinker and the metal in the metallic aluminum reduction slag are alloys. High-value slag is utilized for aluminate-based inorganic nonmetallic materials. Comparative Example 1

[0110] Aluminum clinker is used to alloy valuable metals in waste incineration fly ash. The contents of valuable metals iron and zinc in aluminum clinker are 3.9 wt.% and 1.0 wt.%, respectively, and the contents of valuable metals iron and zinc in waste incineration fly ash are 1.3 wt.% and 0.6 wt.%, respectively. The reducing agent in aluminum clinker includes aluminum nitride, aluminum carbide and metallic aluminum, and aluminum carbide and metallic aluminum have a small content, so they are folded into aluminum nitride, and the total content of aluminum nitride after folding is 30.0 wt.%. According to the reduction reaction formula (Formula 3) recorded in the contents of the present invention, the addition amounts of aluminum clinker and waste incineration fly ash are determined to be 5.0 wt.% and 95.0 wt.%, respectively. The raw materials are mixed uniformly to obtain a mixed raw material. The mixed raw material is heated to 1500°C, held for 3.0 hours, and melted into slag. Among the aluminum clinker, aluminum nitride, aluminum carbide, and metallic aluminum are valuable metals that reduce the slag to an iron-zinc alloy, and the reduction rates of iron and zinc are 91% and 95%, respectively. The slag is different from the amorphous state due to the composition of the existing mineral phase, and its XRD diagram, as shown in Figure 7, makes it difficult to recycle. Comparative Example 2

[0111] Aluminum clinker is used to alloy the valuable metals in the apple gypsum. The contents of the valuable metals iron, zinc, and copper in the aluminum clinker are 3.9 wt.%, 1.0 wt.%, and 0, respectively, and the contents of the valuable metals iron, zinc, and copper in the apple gypsum are 1.3 wt.%, 0.6 wt.%, and 0.5 wt.%, respectively. The reducing agents in the aluminum clinker include aluminum nitride, aluminum carbide, and metallic aluminum, and since the contents of aluminum carbide and metallic aluminum are small, they are folded into aluminum nitride, and the total content of aluminum nitride after folding is 30.0 wt.%. According to the reduction reaction formula (Formula 3) recorded in the contents of the present invention, the amounts of aluminum clinker and apple gypsum added are determined to be 7.0 wt.% and 93.0 wt.%, respectively. The raw materials are mixed uniformly to obtain a mixed raw material. The mixed raw material is heated to 1500°C, held for 3.0 hours, and melted into slag. Among the aluminum clinker, aluminum nitride, aluminum carbide, and metallic aluminum are valuable metals that reduce the slag to an iron-zinc-copper alloy, and the reduction rates of iron, zinc, and copper are 90%, 94%, and 92%, respectively. The slag is difficult to recycle because of the composition of the existing mineral phase, unlike the amorphous state. Comparative Example 3

[0112] Aluminum clinker is used to alloy the valuable metals in the hot plate slag. The contents of the valuable metals iron, chromium and zinc in the aluminum clinker are 3.9wt.%, 1.0wt.% and 0, respectively, and the contents of the valuable metals iron, chromium and zinc in the hot plate slag are 0.7wt.%, 4.5wt.% and 0.3wt.% respectively. The reducing agents in the aluminum clinker include aluminum nitride, aluminum carbide and metallic aluminum, and since the contents of aluminum carbide and metallic aluminum are small, they are folded into aluminum nitride, and the total content of aluminum nitride after folding is 30.0wt.%. According to the reduction reaction formula (Formula 3) recorded in the contents of the present invention, the additive amounts of aluminum clinker and hot plate slag are determined to be 10.0wt.% and 90.0wt.%, respectively. The raw materials are mixed uniformly to obtain a mixed raw material. The mixed raw material is heated to 1600℃, held for 3.0 hours, and melted into slag. Among the aluminum clinkers, aluminum nitride, aluminum carbide, and metallic aluminum are valuable metals that reduce the slag, which is an iron-chromium-zinc alloy, and the reduction rates of iron, chromium, and lead are 93%, 90%, and 95%, respectively. Due to the composition of the existing mineral phases, the slag is different from the amorphous state, and it is difficult to recycle it into a resource.

[0113] The above are merely specific embodiments of the present invention, and the technical scope of the present invention is not limited thereto. It is obvious that a person skilled in the art can easily think of various equivalent modifications or alternatives within the technical scope of the present invention, and it is understood that they also belong to the technical scope of the present invention. Therefore, the protection scope of the present invention is based on the protection scope defined by the claims.

Claims

1. A method for recycling multi-source solid waste based on a combination of calcium oxide, silicon oxide, aluminum oxide, and magnesium oxide, comprising: collecting multi-source solid waste composition data; Calculating the composition of calcium oxide, silicon oxide, aluminum oxide, and magnesium oxide, and mixing them to obtain a target composition of inorganic non-metallic material raw material, the target composition being a composition including calcium oxide, silicon oxide, aluminum oxide, and magnesium oxide; The raw material is melted to become slag, and the reducing agent in the multi-source solid waste reduces the valuable metals in the slag to form alloys, thereby realizing valuable metal recovery; and adding value to the slag for use in inorganic non-metallic materials. The method for recycling multi-source solid waste based on the combination of calcium oxide, silicon oxide, aluminum oxide, and magnesium oxide includes the following steps: S1: Data collection: Collecting multi-source solid waste composition data, i.e., determining the contents of CaO, SiO2, Al2O3 and MgO in multi-source solid waste; S2: Determine the target mineral phase composition range of CaO, SiO2, Al2O3 and MgO by weight percentage and solid waste raw materials: determine the main mineral phase of the slag with high value for inorganic non-metallic materials, and determine the target mineral phase composition range based on the ternary phase diagram of CaO-SiO2-Al2O3, CaO-SiO2-MgO, CaO-Al2O3-MgO, SiO2-Al2O3-MgO, i.e., select the target mineral phase composition range of CaO, SiO2, Al2O3 and MgO by weight percentage and two or more solid wastes or industrial raw materials as raw materials; S3: Calculate the composition and mix: substitute the composition data of the selected solid waste and the target mineral phase composition data into the unit composition matrix of calcium oxide, silicon oxide, aluminum oxide and magnesium oxide, solve the matrix, calculate the amount of the selected solid waste to be added, mix and mix to obtain the inorganic non-metallic material raw material of the target composition; S4: Melting: Heating the raw material to 1300-1800°C and then holding the temperature for 1.0-3.0 hours to melt it into slag; S5: Reduction: The slag provides a homogeneous reaction environment at high temperature and acts as a solvent for the reactants, and the reducing agent reduces the valence metals in the slag to alloys; S6: Separation of slag and metal: the alloy is denser than the slag and therefore sinks to the bottom of the slag and is separated from the slag; S7: slag high value addition: the slag is used for preparing silicate-based inorganic nonmetallic materials, aluminate-based inorganic nonmetallic materials, aluminosilicate-based inorganic nonmetallic materials, and aluminum-magnesium-based inorganic nonmetallic materials according to the target mineral phase composition; The unit composition matrix of calcium oxide, silicon oxide, aluminum oxide and magnesium oxide is calculated as follows: [0010] where P n is the amount of additive in the nth solid waste, Qn-CaO is the CaO content in the nth solid waste, Q n-SiO2 is the content of SiO 2 in the nth solid waste, Q n-Al2O3 is the content of Al 2 O 3 in the nth solid waste, Q n-MgO is the content of MgO in the nth solid waste, G i is the total content of CaO, SiO 2 , Al 2 O 3 and MgO in the ith solid waste; α is the CaO content in the target mineral phase composition region; β is the SiO2 content in the target mineral phase composition region; γ is the Al 2 O 3 content in the target mineral phase composition region; δ is the MgO content in the target mineral phase composition region; The sum of α, β, γ, and δ is 1, A method for recycling multi-source solid waste based on a combination of calcium oxide, silicon oxide, aluminum oxide, and magnesium oxide, wherein the amounts and contents of the additives and the contents are expressed as weight percent.

2. The method for recycling multi-source solid waste based on the combination of calcium oxide, silicon oxide, aluminum oxide and magnesium oxide as claimed in claim 1, characterized in that the slag provides a high temperature homogeneous reaction environment, acts as a solvent for the reactants, and changes the reduction reaction from a solid / solid and solid / liquid heterogeneous reaction to a homogeneous reaction.

3. The method for recycling multi-source solid waste based on the combination of calcium oxide, silicon oxide, aluminum oxide, and magnesium oxide according to claim 1, characterized in that the reducing agent of the multi-source solid waste is selected from at least one of carbon, aluminum metal, aluminum nitride, aluminum carbide, silicon nitride, and silicon carbide.

4. The method for recycling multi-source solid waste based on the combination of calcium oxide, silicon oxide, aluminum oxide and magnesium oxide as claimed in claim 1, characterized in that the inorganic non-metallic material is selected from at least one of the following: silicate-based inorganic non-metallic materials, aluminate-based inorganic non-metallic materials, aluminosilicate-based inorganic non-metallic materials, and aluminum-magnesium-based inorganic non-metallic materials.

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