Manufacturing method and application of sedimentary rock solid waste wiredrawing fiber

Abstract

The invention discloses a manufacturing method and application of sedimentary rock solid waste wiredrawing fibers. Firstly, sedimentary rock solid waste with the particle size smaller than 5 mm is smashed, screened and then injected into a stock bin and detected by an optical component detector, data are transmitted to a modification base bin, a modifier is added according to the result proportion, and then the mixture is fed into a melting furnace. The preparation method comprises the following steps of: performing pyrolysis under the conditions of 1250-2000 DEG C and 0.025-0.080 MpG to generate molten liquid, homogenizing the molten liquid, feeding the molten liquid to a platinum-rhodium nozzle, controlling the drawing viscosity at 190-300Pa. S, cooling, infiltrating and drawing to obtain a product. When the diameter of the fiber is smaller than or equal to 13 microns and the surface density is 260 g / m < 2 >, the monofilament tensile strength is 2100 Mpa, and other properties are good. The glass has low acid and alkali resistant mass loss rate and glass softening temperature of 760-960 DEG C, and can be used for manufacturing various materials. According to the method, the sedimentary rock solid waste serves as the raw material, high-added-value utilization is achieved, energy is saved, solid waste components are simple, and technical popularization and production management standard formulation are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of solid waste resource utilization, and in particular to a method for preparing sedimentary rock solid waste drawn fiber and its application. Background Art

[0002] Sedimentary rock solid waste is a type of solid waste discharged during the mining, washing, and selection of sedimentary rocks. It includes limestone solid waste, sandstone solid waste, mudstone solid waste, shale solid waste, etc., accounting for about 15-20% of the amount of sedimentary rock mining. The amount of discharge accounts for more than 80% of industrial solid waste, and the current domestic stockpile storage capacity is about more than 10 billion tons.

[0003] Currently, the utilization technology of sedimentary rock solid waste is mainly concentrated in industries with low added value, such as road filling, construction engineering, and low-heat power generation.

[0004] From the perspective of associated elements in sedimentary rock solid waste, it is mainly a mixture of minerals (accounting for about 60-80%) and organic matter (C, H, O) (accounting for about 20-40%). 2 O 3 , Fe 2 O 3 The total amount of O is more than 70%. In addition, it also contains a certain amount of CaO, MgO, etc. The presence of these associated elements is an essential raw material for making inorganic non-metallic materials, and is also a high-quality material for producing inorganic fibers. Summary of the invention

[0005] The purpose of the present invention is to solve the problems existing in the background technology and provide a method for making drawn fibers from sedimentary rock solid waste and its application. In order to solve the above technical problems, the technical solution provided by the present invention is: a method for making drawn fibers from sedimentary rock solid waste,

[0006] The following steps are involved:

[0007] The sedimentary rock solid waste material is crushed and screened to obtain a raw material with a particle size of less than 5 mm, which is injected into a silo and fed to an optical component detector. The optical component detector performs real-time detection on the material and transmits the analysis data to the modified base silo through a data line. The modified base silo performs intelligent metering, proportioning, and injection of required modifiers in the silo according to the optical component analysis results, and feeds the modified mixed material into a melting furnace. The melting furnace temperature is 1250° C. to 2000° C. and the internal pressure is 0.025 to 0.080 MpG, so that the mixed material in the melting furnace undergoes a pyrolysis and combustion reaction. In this process, when the mixed material burns in the melting furnace (5), the heat generated is used as a heat source for high-temperature melting of non-combustible components in the processing material, and SiO in the mixed material is heated to 100° C. and 2000° C. 2 、Al 2 O 3 , Fe2 O 3 , CaO, and MgO ash groups are converted into sedimentary rock solid waste molten liquid under high temperature conditions;

[0008] After the sedimentary rock solid waste molten liquid is fully homogenized, a homogenized liquid with stable composition is obtained, and the homogenized liquid is sent to a platinum-rhodium nozzle. The platinum-rhodium nozzle is heated and insulated by an electrode plate to maintain the stability of the homogenized liquid and control the drawing viscosity of the homogenized liquid to be 190Pa.s to 300Pa.s. The homogenized liquid is ejected from the platinum-rhodium nozzle and then enters the infiltration base bin for cooling and infiltration treatment. The silk fiber treated in the infiltration base bin is drawn by a wire guide and introduced onto a fiber winding spindle. Thus, a stable sedimentary rock solid waste drawing fiber product is obtained.

[0009] When the silk fibers treated by the impregnation base chamber enter the yarn guide, the spinning function is started, and the spinning environment temperature is controlled at 300℃-800℃, and real-time monitoring and adjustment are performed; the fibers formed by spinning are collected by the rotating disk, and the speed matches the spinning speed. The collected fibers are cooled twice, and the wind speed is set to 5-20m / s during air cooling, and the water flow rate is controlled at 0.1-1m during water cooling. 3 / h. By adding the spinning link of the wire guide, more flexibility and optimization space can be brought to the production process of sedimentary rock solid waste drawing fiber to obtain the best product performance and economic benefits.

[0010] The modified base bin contains one or more modified raw materials selected from the group consisting of silane coupling agent, toughening agent, leveling agent, stabilizer, auxiliary agent, titanate coupling agent, antioxidant, and acrylate copolymer; and the particle size of the sedimentary rock solid waste is less than 5 mm.

[0011] As a preferred embodiment, the components in the base material satisfy SiO 2 45~65%, FeO 8~14%, Al 2 O 3 The range of CaO is 10-25%, CaO+MgO is 10-30%.

[0012] Preferably, the material is transported to the melting furnace after being proportioned with the modified base, the melting temperature is controlled between 1250 and 1350° C., and the drawing speed is 20 to 40 m / s to obtain a fiber product with stable performance.

[0013] Preferably, the viscosity of the melt during wire drawing is controlled at 190 Pa.s to 300 Pa.s.

[0014] The solid waste drawing fiber obtained by the production method has a diameter of ≤13um.

[0015] As a preferred method, the surface density of solid waste fiber is 260g / m 2 The single-filament tensile strength is 2100Mpa, the elastic modulus is 105Gpa, and the elongation is 2.6%.

[0016] Preferably, the acid-resistant mass loss rate of the solid waste fiber is less than 5%, and the alkali-resistant mass loss rate is less than 3%.

[0017] Preferably, the glass softening temperature of the solid waste fiber is 760°C to 960°C.

[0018] The solid waste drawn fibers are used for making composite materials or reinforced composite materials.

[0019] The solid waste drawn fibers are used as fireproof heat-insulating materials, heat-insulating materials, sound-proof materials, corrosion-resistant materials, insulating materials, low-temperature-resistant materials, and optical fiber materials.

[0020] The present invention has the following advantages: using sedimentary rock solid waste as raw material and matching a small amount of modified base to produce drawing fibers with stable performance has the following advantages:

[0021] a. Realize high added value utilization of sedimentary rock solid waste.

[0022] b. Sedimentary rock solid waste is large in quantity, covers a wide area, is easy to obtain, and contains a certain amount of available calorific value, which saves energy during the melting process.

[0023] c. The associated elements of sedimentary rock solid waste are simpler than those of other solid wastes (such as urban garbage, hazardous solid waste, and semi-solid waste), making it easier to promote product technology and formulate product production management standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a process flow chart of the present invention.

[0025] Figure 2 It is a picture of a stable sedimentary rock solid waste drawing fiber product obtained by implementation.

[0026] Figure 3 It is a measurement diagram of a stable sedimentary rock solid waste drawing fiber product obtained by implementation.

[0027] Figure 4 This is a picture of sedimentary rock solid waste drawing fiber products.

[0028] 1. Material bin, 2. Optical component detector, 3. Transmission data cable, 4. Modified base bin, 5. Melting furnace, 6. Platinum-rhodium nozzle, 7. Wetting bin, 8. Wire guide, 9. Fiber winding spindle. DETAILED DESCRIPTION

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] In the description of the embodiments of the present invention, if a feature is referred to as being "set", "fixed", "connected", or "installed" on another feature, it may be directly set, fixed, or connected to the other feature, or it may be indirectly set, fixed, connected, or installed on the other feature. In the description of the embodiments of the present invention, if "several" is involved, it means more than one, if "multiple" is involved, it means more than two, if "greater than", "less than", or "exceeds" is involved, it should be understood as not including the number itself, and if "above", "below", or "within" is involved, it should be understood as including the number itself. If "first" or "second" is involved, it should be understood as being used to distinguish technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings.

[0033] The preferred embodiments of the present invention are shown in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0034] In conjunction with the accompanying drawings, a method for producing sedimentary rock solid waste drawing fiber includes the following steps:

[0035] The sedimentary rock solid waste material is crushed and screened to obtain raw materials with a particle size of less than 5 mm, which are injected into the silo 1 and fed to the optical component detector 2. The optical component detector 2 performs real-time detection on the material and transmits the analysis data to the modified base silo through the data line 3. The modified base silo 4 performs intelligent metering, proportioning, and filling of the required modifier in the silo according to the optical component analysis results, and feeds the modified mixed material into the melting furnace 5. The melting furnace temperature is 1250℃~2000℃, and the internal pressure is 0.025~0.080MpG, so that the mixed material in the melting furnace 5 undergoes pyrolysis and combustion reaction. In this process, when the mixed material burns in the melting furnace 5, the heat generated is used as a heat source for high-temperature melting of the non-combustible components in the processing material, and SiO 2 、Al 2 O 3 , Fe 2 O 3 , CaO, and MgO ash groups are converted into sedimentary rock solid waste molten liquid under high temperature conditions;

[0036] After the sedimentary rock solid waste molten liquid is fully homogenized, a homogenized liquid with stable composition is obtained, and the homogenized liquid is sent to the platinum-rhodium nozzle 6. The electrode plate around the platinum-rhodium nozzle 6 is heated and insulated to keep the stability of the homogenized liquid stable, and the drawing viscosity of the homogenized liquid is controlled at 190Pa.s~300Pa.s; the homogenized liquid is ejected from the platinum-rhodium nozzle 6 and enters the infiltration base chamber 7 for cooling and infiltration treatment. The silk fiber treated by the infiltration base chamber 7 is drawn by the wire guide 8 and introduced into the fiber winding spindle 9; thereby, a stable sedimentary rock solid waste drawing fiber product is obtained.

[0037] When the silk fibers treated by the impregnation base chamber enter the yarn guide, the spinning function is started, and the spinning environment temperature is controlled at 300℃-800℃, and real-time monitoring and adjustment are performed; the fibers formed by spinning are collected by the rotating disk, and the speed matches the spinning speed. The collected fibers are cooled twice, and the wind speed is set to 5-20m / s during air cooling, and the water flow rate is controlled at 0.1-1m during water cooling. 3 / h.

[0038] The modified base bin contains one or more modified raw materials selected from the group consisting of silane coupling agent, toughening agent, leveling agent, stabilizer, auxiliary agent, titanate coupling agent, antioxidant, and acrylate copolymer; and the particle size of the sedimentary rock solid waste is less than 5 mm.

[0039] As a preferred embodiment, the components in the base material satisfy SiO 2 45~65%, FeO 8~14%, Al 2 O 3 The range of CaO is 10-25%, CaO+MgO is 10-30%.

[0040] Preferably, the material is transported to the melting furnace after being proportioned with the modified base, the melting temperature is controlled between 1250 and 1350° C., and the drawing speed is 20 to 40 m / s to obtain a fiber product with stable performance.

[0041] Preferably, the viscosity of the melt during wire drawing is controlled at 190 Pa.s to 300 Pa.s.

[0042] The solid waste drawing fiber obtained by the production method has a diameter of ≤13um.

[0043] As a preferred method, the surface density of solid waste fiber is 260g / m 2 The single-filament tensile strength is 2100Mpa, the elastic modulus is 105Gpa, and the elongation is 2.6%.

[0044] Preferably, the acid-resistant mass loss rate of the solid waste fiber is less than 5%, and the alkali-resistant mass loss rate is less than 3%.

[0045] Preferably, the glass softening temperature of the solid waste fiber is 760°C to 960°C.

[0046] The solid waste drawn fibers are used for making composite materials or reinforced composite materials.

[0047] The solid waste drawn fibers are used as fireproof heat-insulating materials, heat-insulating materials, sound-proof materials, corrosion-resistant materials, insulating materials, low-temperature-resistant materials, and optical fiber materials.

[0048] The inventive concept and detailed implementation methods of the invention are further described below through preferred embodiments.

[0049] Example:

[0050] 1. Carry out material analysis on sedimentary rock solid waste samples. Modification formula ratio of mixed materials entering the melting furnace.

[0051] The analytical data of the sedimentary rock solid waste sample used in this example are shown in Table 1:

[0052] Step 1: Material Analysis Table 1

[0053]

[0054] Step 2: According to the raw material requirements and experimental results, the modified base uses a silane coupling agent to make the main components of the mixed material meet the requirements of SiO 2 45~70%、Al 2 O 3 The range of CaO is 10-25%, CaO+MgO is 10-30%.

[0055] Step 3. Determine the proportion of silane coupling agent formula and add it to the material with a particle size of less than 5 mm. The mixed material is sent to a high-temperature melting furnace, and the temperature in the melting furnace is maintained at 1250°C to 2000°C and the pressure is maintained at 0.025 to 0.08MpG. The sedimentary rock solid waste mixture is burned to obtain a sedimentary rock solid waste molten liquid.

[0056] Step 4. After the sedimentary rock solid waste melt is fully homogenized, it is sent to the platinum-rhodium nozzle, and the temperature around the platinum-rhodium nozzle is controlled to be stable. The temperature is controlled at 1250℃~1350℃, the drawing speed is 20~40m / s, and the melt viscosity is 190~300Pa.s. After being infiltrated in the infiltration base bin, the wire is drawn by the wire guide and introduced into the fiber winding spindle.

[0057] The sedimentary rock solid waste drawing fiber obtained by the above-mentioned production method has a smooth surface, uniform thickness and glossy color.

[0058] The stable sedimentary rock solid waste drawing fiber obtained in the embodiment is shown in Figure 2 .

[0059] The diameter of the stable sedimentary rock solid waste drawing fiber obtained in the embodiment is measured as follows: Figure 3 .

[0060] The stable sedimentary rock solid waste drawing fiber prepared in this embodiment has a diameter of 13um and is a medium sand fiber, which can be used to weave various composite material preforms, and can also be used as short-cut sand for reinforcing plastics, reinforcing cementitious materials, etc.

[0061] The test results of the properties of the stable sedimentary rock solid waste drawing fiber prepared in this embodiment are shown in Table 2. Table 2:

[0062]

[0063] The test results show that the silicon-aluminum-calcium-magnesium sedimentary rock solid waste drawing fiber prepared in this embodiment has excellent mechanical properties and a large elastic modulus, and is a high-modulus fiber.

[0064] The performance test results of the sedimentary rock solid waste drawing fiber material obtained in the embodiment of the present invention are shown in Table 3: Table 3:

[0065]

[0066] The test results show that the silicon-aluminum-calcium-magnesium sedimentary rock solid waste drawing fiber prepared in this embodiment has excellent acid and alkali resistance.

[0067] The stable sedimentary rock solid waste drawing fiber product actually obtained in this embodiment is shown in Figure 4 .

[0068] High value-added utilization: Sedimentary rock solid waste, which was originally regarded as waste, is converted into stable drawing fiber, realizing the secondary utilization of resources and giving new economic value to sedimentary rock solid waste. This high value-added conversion not only reduces the potential impact of solid waste on the environment, but also creates new industrial growth points and brings more economic benefits to related companies. For example, the produced fibers can be widely used in composite materials, fireproof and thermal insulation materials and other fields, meeting the needs of different industries for high-performance materials and improving the market competitiveness of products.

[0069] Energy saving: Sedimentary rock solid waste is huge in quantity, widely distributed and easy to obtain. More importantly, it contains a certain amount of available calorific value. During the melting process, the heat generated by the combustion of the mixed material can be used as a heat source for high-temperature melting of the non-combustible components in the processed material. Taking the melting temperature of 1250℃-2000℃ as an example, the use of the calorific value of the solid waste itself reduces the consumption of additional energy and reduces production costs. Compared with the reliance on a large amount of external energy in the traditional fiber production process, this method has significant energy-saving advantages and is in line with the concept of sustainable development.

[0070] Simple components are conducive to promotion and management: Compared with other solid wastes such as urban garbage, hazardous solid waste, and semi-solid waste, the associated element components of sedimentary rock solid waste are simple. This feature makes it easier to understand the influence of its components on product performance during product technology research and development, thereby quickly optimizing the production process. In terms of product production management, simple components are also convenient for formulating unified and standardized production processes and quality control systems. For example, in controlling SiO in the base material, 2 45-65%, FeO8-14%, Al 2 O 3 Within the range of 10-25% and CaO+MgO10-30%, fiber products with good performance can be stably produced. This provides convenient conditions for the promotion of product technology in the industry and large-scale production management, and helps promote the standardized development of the entire industry.

[0071] The technical features of the above-described embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. The above-described embodiments only express several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, several variations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A method for producing drawn fiber from sedimentary rock solid waste, characterized in that: The following steps are involved: The sedimentary rock solid waste material is crushed and screened to obtain raw materials with a particle size of less than 5mm, which are injected into the silo and fed to the optical component detector. The optical component detector performs real-time detection of the material and transmits the analysis data to the modified base silo through a data line. The modified base silo performs intelligent metering, proportioning, and filling of the required modifiers in the silo according to the optical component analysis results, and feeds the modified mixed material into a melting furnace with a melting furnace temperature of 1250℃~2000℃ and an internal pressure of 0.025~0.080MpG, so that the mixed material in the melting furnace undergoes pyrolysis and combustion reactions; in this process, when the mixed material burns in the melting furnace, the heat generated is used as a heat source for high-temperature melting of the non-combustible components in the processing material, and the SiO2, Al2O3, Fe2O3, CaO, and MgO ash groups in the mixed material are converted into sedimentary rock solid waste molten liquid under high temperature conditions; After the sedimentary rock solid waste molten liquid is fully homogenized, a homogenized liquid with stable composition is obtained, and the homogenized liquid is sent to a platinum-rhodium nozzle. The electrode plate around the platinum-rhodium nozzle is heated and insulated to maintain the stability of the homogenized liquid, and the drawing viscosity of the homogenized liquid is controlled at 190Pa.s to 300Pa.s; the homogenized liquid is ejected from the platinum-rhodium nozzle and then enters the impregnation base bin for cooling and impregnation treatment. The silk fiber treated in the impregnation base bin is drawn by a wire guide and introduced into a fiber winding spindle; thereby, a stable sedimentary rock solid waste drawing fiber product is obtained; When the silk fibers treated by the impregnation base chamber enter the yarn guide, the spinning function is started, and the spinning environment temperature is controlled at 300℃-800℃, and real-time monitoring and adjustment are performed; the fibers formed by spinning are collected by the rotating disk, and the speed matches the spinning speed. The collected fibers are cooled twice, and the wind speed is set to 5-20m / s during air cooling, and the water flow rate is controlled at 0.1-1m during water cooling. 3 / h.

2. The method according to claim 1, characterized in that: The components in the base material meet the range of SiO2 45-65%, FeO 8-14%, Al2O3 10-25%, and CaO+MgO 10-30%.

3. The method according to claim 1, wherein: The material is transported to the melting furnace after being proportioned with the modified base, the melting temperature is controlled between 1250 and 1350°C, and the drawing speed is 20 to 40 m / s to obtain a fiber product with stable performance.

4. The method of claim 1, characterized in that: The viscosity of the melt for wire drawing is controlled at 190 Pa.s to 300 Pa.s.

5. The solid waste drawing fiber obtained by the production method according to any one of claims 1 to 4, characterized in that: The diameter of solid waste fiber is ≤13um.

6. The sedimentary rock solid waste fiber according to claim 5, characterized in that: Solid waste fiber surface density 260g / m 2 The single-filament tensile strength is 2100Mpa, the elastic modulus is 105Gpa, and the elongation is 2.6%.

7. The solid waste drawn fiber according to claim 5, characterized in that: The acid-resistant mass loss rate of the solid waste fiber is less than 5%, and the alkali-resistant mass loss rate is less than 3%.

8. The solid waste drawing fiber according to claim 5, characterized in that: The glass softening temperature of solid waste fiber is 760℃~960℃.

9. Use of the solid waste drawn fiber according to any one of claims 6 to 8 in the preparation of composite materials or reinforced composite materials.

10. The solid waste drawn fiber according to any one of claims 6 to 8 is used as a fireproof heat-insulating material, a heat-insulating material, a sound-proof material, a corrosion-resistant material, an insulating material, a low-temperature-resistant material, or an optical fiber material.

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