38 results about "Ash preparation" patented technology

The invention provides microcrystal glass prepared through microwave heating and a method thereof, which relate to microcrystal glass and a preparation method thereof and aim at solving the problems that the existing microcrystal glass preparation method has high raw material cost, the finished product rate is low, the energy source waste is serious, and in addition, the environment protection is unfavorably realized. The microcrystal glass prepared through microwave heating is prepared from 50 to 90 weight parts of sludge pyrolysis ash, 10 to 30 weight parts of calcium oxide, 1 to 20 weight parts of silicon dioxide and organic solvents through microwave heating or is prepared from 50 to 90 weight parts of sludge pyrolysis ash, 10 to 25 weight parts of cullet, 15 to 25 weight parts of calcium dioxide and organic solvents through microwave heating. The preparation method comprises the following steps of: 1, sludge pyrolysis ash preparation; 2, forming; 3, microwave sintering; and 4, microwave nucleation crystallization. The method is mainly used for preparing the microcrystal glass.

The invention discloses a preparation method of a conductivity-controllable fly ash-based geopolymer semiconductor material. The preparation method comprises the following steps: putting fly ash, carbon black, sodium silicate nonahydrate and an aqueous solution of potassium hydroxide into a stirring device and mixing; and forming with a mould and curing to obtain the conductivity-controllable fly ash-based geopolymer semiconductor material, wherein the dosage of the sodium silicate nonahydrate, potassium hydroxide, carbon black and water accounts for 15%, 7%, 0.5-4.5% and 30-40% of the fly ash mass respectively; the stable conductivity of the prepared fly ash-based geopolymer semiconductor material can be controlled in a range from 0.00025 to 0.65 (S/m) in a curing age of 28 days; and when the prepared conductivity-controllable fly ash-based geopolymer semiconductor material is used as a novel photocatalyst for degrading malachite green organic dye, a change law that the conductivity of the material is directly proportional to the degradation rate of the dye is discovered. The preparation technology is simple, the cost is low, the discharge of three wastes is avoided in the preparation process, and the conductivity-controllable fly ash-based geopolymer semiconductor material can be used as a dye degrading high-activity catalyst.

The invention discloses coke matched with Australian coking coal for use and a coking method, and mainly aims to solve the technical problems that coke refined by the Australian coking coal is high in reactivity (CRI), low in post-reaction strength and cannot reach quality requirements of high-quality metallurgical coke due to the fact that coking properties of the Australian coking coal in the prior art are lower than those of high-quality coking coal. According to the technical scheme adopted by the invention, the coke matched with Australian coking coal for use is prepared by mixing and coking the following blending coal in percentage by mass: 12%-17% of 1/3 coking coal, 18%-25% of gas coal, 20%-26% of fat coal, 28%-35% of coking coal, 6%-10% of lean coal, and 6%-12% of Australian coking coal. According to the characteristics of the Australian coking coal, corresponding control indexes, namely coal ash preparation components and alternative coal types, are disclosed, so that the quality stability of the coking coal is guaranteed when the Australian coking coal resources are used.

The invention relates to a novel environment-friendly circulation technological system and a novel environment-friendly circulation technological method on the basis of combined soda ash preparation processes. The novel environment-friendly circulation technological system comprises a mother liquor II barrel, an ammonia absorber II, an ammonia mother liquor II barrel, a carbonization tower system, a compression device, a soda outlet tank, a filter, a light ash calcining furnace, a light ash soda cooling system, a hydration machine, a heavy ash calcining furnace, an soda cooler, a mother liquor I barrel, an ammonia absorber I, a heat exchanger, a semi-mother liquor II barrel, a gathering tank, a cold separation crystallizer, a salting-out crystallizer, a No.2 weir type flow meter, a salting-out thickener, a No.1 weir type flow meter, a cold separation thickener, a centrifugal ammonium filter, a dense ammonium packaging system, an ammonium drying furnace and a dry ammonium packaging system. The novel environment-friendly circulation technological system and the novel environment-friendly circulation technological method have the advantages that generated 'waste mixed water' can be completely digested in a self-circulation manner; waste gas can be discharged after being treated and reaching standards; AII mud and residues can be reused as desulfurizing agents for boilers after being treated; the novel environment-friendly circulation technological system is high in production efficiency, the yield of ammonium chloride can reach 650 thousand tons/year, and the yield of soda can reach 600 thousand tons/year (the yield of dense soda is 400 thousand tons/year).

The invention discloses a method for preparation of a concrete admixture from papermaking green mud alkali recovery bottom slag, green mud ash powder is obtained by drying, calcining and ball milling of papermaking green mud, supernatant and bottom slag can be obtained by mixing, dissolving and standing of the green mud ash powder, and the bottom slag is filtered by pressing and mixed with fly ash to obtain the concrete admixture. On the one hand, papermaking green mud burying is avoided, on the other hand, a large amount of waste residue generated after green mud alkali recovery is effectively utilized; meanwhile, the supernatant of the green mud ash solution can be used in a coal fired boiler desulfurization system of a paper making plant.

The invention relates to a method for generating electricity by burning wet coal ash from an Ender furnace. Through a wet coal ash preparation process 1, an intense wet coal ash stirring process 2, a wet coal ash screening process 3, a water-adding slurrying process 4, a pipe conveying process 5 and a process 6 for adding the wet coal ash into a cyclic fluidized bed boiler to participate in combustion, the wet coal ash slurry is added into the boiler and burned with boiler fuels together so as to obtain heat for generating the electricity. The method can use the wet coal ash generated by the Ender furnace as a fuel to burn in the cyclic fluidized bed boiler so as to generate the electricity, realizes the full utilization of the wet coal ash, reduces discharge, environment pollution and occupied land resources, and achieves dual effects on energy conservation and environmental protection. The method also can utilize carbon-containing wastes such as coal with low thermal value, coal slurry, organic sludge and the like, and is applicable to generating the electricity by the fuels with low thermal value.

The invention relates to a method for preparing magnesium chloride. The preparation method comprising the steps of: (1) mixing ammonium chloride with magnesium carbonate so as to obtain a mixture; and(2) heating the mixture obtained in the step (1) so as to obtain anhydrous magnesium chloride, wherein both the ammonium chloride and the magnesium carbonate are solid. The preparation method has a simple and easy process, ammonium chloride which is a by-product of a soda ash preparation method is adopted as a reactant, and the product is magnesium chloride which can be applied to antifreeze liquid, snow melting agents, magnesium fertilizer, magnesium potassium fertilizer or a raw material for magnesium preparation through a molten electrolysis method; and by-products ammonia and carbon dioxide can be applied to preparation of soda ash. Through combination of the method for preparing magnesium chloride with a process for producing soda ash, zero discharge can be achieved, the requirementsof energy conservation and environmental protection can be met, and the economic benefits of enterprises are improved.

The invention relates to preparation of modified fly ash for deeply treating refinery waste water. The preparation comprises the steps of (1) forming a modifying agent: adopting 1g of fly ash as the basis, and adding 0.05g of sodium chloride, 0.5ml of sulfuric acid with the concentration of 2mol/L, and 0.5ml of hydrochloric acid with the concentration of 4mol/L into the modifying agent; (2) modifying the fly ash, mixing and stirring the fly ash and the modifying agent at room temperature, filtering, washing, drying and grinding to prepare acid modified fly ash. An application method of the modified fly ash is characterized by adding the prepared modified fly ash into waste water to be treated according to the proportion of the waste water to the modified fly ash as 100ml to 10g, and stirring and adsorbing for 45 to 60 minutes. According to the preparation and application of the modified fly ash for deeply treating the refinery waste water provided by the invention, the adsorption capacity of the fly ash is greatly improved, the aim of dealing with waste by waste is achieved, the cost is low, the land use is less, the environment protection and the economy are realized.

The invention discloses a mortar ash mixing station adopting pipe chain conveying, and a preparation method and an application thereof. The mortar ash mixing station comprises a pipe chain type conveyor (1), wherein the pipe chain type conveyor (1) has a section of head part used for injecting combined component materials of mortar ash, another section of head part used for discharging the mortarash, and a middle section part arranged between the section of head part and the other section of head part. By means of the pipe chain type conveyor (1), continuous feeding of combined component materials of the mortar ash and continuous discharging of the mortar ash are achieved, and therefore the mortar ash preparation efficiency is improved.

An alkali manufacturing technology for the combined production of sulfuric acid and cement. According to the invention, anhydrous sodium sulfate, calcium oxide and fine coal are used as basic raw materials. By the basic technological principle of the soda ash preparation technology, a calcium chloride waste liquid formed during the soda ash preparation and ammonia regeneration process is recovered so as to obtain dihydrate calcium sulphate. By the adoption of the gypsum acid making technological principle, the dihydrate calcium sulphate is used as a raw material for the combined production of soda ash, sulfuric acid and cement clinker, thus greatly reducing the comprehensive production cost of the products and solving problems caused by ammonia-nitrogen emission and a lot of by-products during the soda ash production process. The invention is of great importance for the energy saving and emission reduction, comprehensive utilization of resources and development of circular economy in the chemical industry.

The invention relates to the technical field of soda ash production, in particular to a method for recycling return sand in soda ash production, which comprises the following steps of: mixing the return sand and gravels, feeding the mixture into a kiln, and calcining the mixture to obtain quick lime. Return sand can be recycled to obtain raw materials for the soda ash preparation process, so thatresource waste is eliminated, profits are increased, environmental pollution is reduced, and huge economic benefits are increased for enterprises.

The invention relates to passion fruit planting techniques, in particular to a passion fruit overwintering method. The method includes: step one, branch pruning; step two, plant ash preparation; stepthree, ash mud preparation, to be specific, taking plant ash prepared in the step two, adding soil, and adding water to obtain ash mud, wherein a weight ratio of the plant ash to the soil is 1:0.1-5;step four, spraying to branches. According to the method, after pruning of passion fruit seedlings, the ash mud consisting of the plant ash and the soil is sprayed to main veins, the passion fruit seedlings do not freeze internally in cold winter due to the alkaline effect of the plant ash and the heat preservation effect of the soil, internal structures of the passion fruit seedlings are protected from being damaged by ice crystals, vitality is kept, and accordingly the passion fruit seedlings live through the cold winter smoothly, and conditions are provided for high yield in the next year.

The invention relates to the related field of waste gas purification, and discloses a plant ash preparation device with a waste gas purification function, which comprises a main box body; a combustion chamber with a rightward opening is arranged in the main box body, the right end surface of the main box body is hinged with a baffle plate positioned on the right side of the combustion chamber, and the upper end wall of the combustion chamber is communicated with a collection cavity; filter bags are fixedly connected between the left end wall and the right end wall of the smoke removal cavity, the contact area of lime slurry and waste gas is increased by spraying atomized lime slurry, so that the desulfurization efficiency is improved, nitric oxide in the waste gas is adsorbed by moving an activated carbon plate in a reciprocating mode to achieve denitration, and the denitration efficiency is improved. The plant ash waste gas is subjected to desulfurization and denitrification treatment, so that the environment is protected; in addition, nitric oxide in the waste gas is subjected to automatic induction treatment, then activated carbon is automatically replaced, it is guaranteed that nitric oxide in the waste gas is absorbed, and the effectiveness of the device is improved.

The invention discloses an aerated concrete block. The aerated concrete block is prepared from 15 to 25% of oyster shell powder, 35 to 40% of fly ash, 25 to 35% of constructional waste, 18 to 25% of lump lime, 5 to 15% of cement and 1 to 5% of aluminum powder. According to the invention, oyster shells (mussel shells) are crushed and ground and rationally proportioned as main aggregate for production of the aerated concrete block; due to characteristics of the oyster shells (mussel shells), the physical properties (including lightweight, heat insulating ability, anti-compression performance, fire resistance, sound absorption performance, durability, water seepage resistance, workability and the like) of the aerated concrete block can be improved by 20% or above to a greatest extent; pollution is not produced in the process of processing and grinding; cementing materials (such as cement and gypsum) are saved; ash preparation through burning of the oyster shells produces pollution due to usage of coal, and pollution caused by the oyster shells (mussel shells) in coastal regions greatly perplexed local governments due to nondegradablility of the oyster shells (mussel shells) and exerts great influence on construction of livable cities; and with the help of the production process for the aerated concrete block, the life of people and the environment can be improved, the waste is turned into the valuable, the policy of cyclic utilization advocated by the government is abided by, and energy conservation and emission reduction are realized.

The invention relates to an analysis method for chemical components of coal and discloses a more accurate testing and metering method for the content of sodium in coal. The method comprises the following steps: extraction of a coal sample; leaching of the coal sample; ash preparation at low temperature; respective measurement of the contents of Na2O in coal in the steps of leaching and ash preparation; and calculation of the content of and/or the content of sodium in the coal. In the step of leaching, the coal sample and ultrapure water or a hydrochloric acid solution with a concentration of 0.1 to 0.5 mol/L are maintained in a constant-temperature water-bath shaking table at a constant temperature of 40 to 80 DEG C for 2 to 24 h; then leaching liquid and a filter residue are separated in vacuum; an inductively coupled plasma atomic emission spectrometer (ICP) is employed to measure the content of sodium in filtrate; calculation is carried out so as to obtain the content of Na2O; and the obtained filter residue is dried and metered, and ash preparation is carried out at 550 to 700 DEG C. The method provided by the invention realizes more accurate testing and metering of sodium in coal and is favorable for better research on the proportions of sodium of different occurrence forms and the migration rule of sodium at different temperatures.

The invention relates to a lime kiln tumor breaking machine device in underground circulating soda ash preparation. The device comprises a speed reducer, a power output shaft outside the kiln, a bevel gear set, a power input shaft inside the kiln, a tumor breaking machine and an ash discharge device, wherein the speed reducer is positioned outside the lime kiln, the power output shaft outside the kiln of the speed reducer is connected with the bevel gear set positioned inside the kiln, the bevel gear set is connected with the tumor breaking machine through the power input shaft inside the kiln, and the tumor breaking machine is installed below an ash discharging rotary disc of the lime kiln to guarantee that lime on the ash discharging rotary disc can fall into the tumor breaking machine from an outlet of an ash blocking plate. According to the lime kiln tumor breaking machine device, mechanical equipment can be effectively adopted to mechanically treat ash tumors generated in the lime kiln, the situation that the labor intensity of workers is increased due to tumor formation is avoided, the working safety of the workers is protected, and damage to the kiln condition and the influence on production due to tumor formation are reduced.

The invention discloses a method for preparing a clay material for 3D printing, and belongs to the technical field of preparation of materials for 3D printing, and the clay material for 3D printing is prepared by the following steps: clay material preparation, calcium carbonate powder preparation, plant ash preparation, low temperature crushing, addition of a specific synthetic agent and a starch synthesis agent for modification, extruding, granulating and the like. The clay material has the advantages of good plasticity, easy molding, good mechanical performance and high accuracy, is suitable for 3D printing technologies, promotes the popularization and application of the 3D printing technologies, and has a broad market prospect.

The invention discloses a novel clay material for 3D printing and belongs to the technical field of preparation of materials for 3D printing. The novel clay material for 3D printing is prepared from the following raw materials: clay material, calcium carbonate powder, plant ash, a particular composition, a starch composition, and water, in a mass ratio of (20-30): (8-16): (6-10): (5-8): (4-6): (10-25). The novel clay material for 3D printing is prepared through the steps of clay material preparation, calcium carbonate powder preparation, plant ash preparation, crushing at a normal temperature, adding of the particular composition and the starch composition for modification, extruding granulation, etc. The clay material of the invention has high abrasive strength, impact strength and shock strength, good plasticity, favorable formability, high precision, and the like, and is applicable to the 3D printing forming technique; the popularization and application of the 3D printing forming technique are promoted; and the clay material has favorable market prospect.

The invention belongs to the technical field of radix rubiae ammoniated treatment and in particular relates to an ammoniated treatment method by taking radix rubiae as feed. The method comprises the following steps: collecting radix rubiae, separating leaves from stems and vines, preparing a plant ash preparation, and performing ammoniated treatment. Compared with the prior art, the method disclosed by the invention has the advantages that the leave, stems and vines of the radix rubiae are respectively treated, the stems and vines are fixed and disinfected with a warm salt solution, the plantash preparation is prepared by taking the leaves as raw materials, the prepared plant ash preparation comprises active materials and organic components capable of regulating enzymolysis of crude fibers, xylogen and lignin compounds in radix rubiae stems and vines, the ammoniation conditions are strictly controlled, the active ingredients in the stems and vines are avoided from being damaged, and the ammoniation time is shortened, so that the ammoniation material of radix rubiae is complete in ammoniation and is difficult to rot or stink and easy to store, the nutritive materials are well maintained, and the immunity of the animals is enhanced while maintaining comprehensive nutrition.