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Integrated process technology of whitening, shaping and modifying natural powdery quartz

A process technology, quartz technology, applied in the field of modification integrated process, shaping, and natural powder quartz whitening, can solve the problems of high quality modification equipment, high production cost, strict equipment requirements, etc., to improve mechanical processing. Performance and mechanical properties, easy to mass industrial production, significant activation effect

Inactive Publication Date: 2017-08-11
HUNAN JINMA NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] This method has high production costs, requires cooling after heating, and requires high quality modification equipment, heat-resistant and wear-resistant materials, and requires a large investment.
[0011] To sum up, at present, the whiteness of silicon micropowder with chemical bleaching is limited, and the color becomes darker when added to resin; the existing calcined powdered quartz has complicated process, high calcining temperature, long holding time, and high production cost; existing modified The method has high production costs, strict requirements on equipment, and large investment

Method used

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  • Integrated process technology of whitening, shaping and modifying natural powdery quartz
  • Integrated process technology of whitening, shaping and modifying natural powdery quartz
  • Integrated process technology of whitening, shaping and modifying natural powdery quartz

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] First, the natural powder quartz ore is manually selected to remove red, yellow, brown and other color impurities, and then it is ground and classified to obtain a 3000-mesh powder (whiteness is 74.2%), and charcoal is added (the amount is 1.5% of the weight of the powder). %) and sodium chloride (the amount is 1% of the weight of the powder) and stir evenly, then send the material into the rotary kiln, calcined at 900°C for 1.5 hours, cool the material, and send it into the high-speed mixer for beating Dispersion (the processing output of the disintegrator is 1 ton / hour), modification. Heat the FT-3 aluminum-titanium composite coupling agent to 100°C for melting, adjust the flow rate of the automatic dosing pump, the flow rate of FT-3 aluminum-titanium composite coupling agent is 20 kg / hour, and the flow rate of silicon 69 is 10 kg / hour, the two active agents are simultaneously sprayed into the dispersing machine barrel for activation treatment to produce high-purity...

Embodiment 2

[0038] First, the natural powder quartz ore is hand-selected to remove red, yellow, brown and other color impurities, ball milled and classified to obtain a powder of 1250 mesh (whiteness 73.8%), and refined coal (amount of 2% of the weight of the powder) is added. %) and sodium carbonate (the amount is 1% of the weight of the powder) and stir evenly, then put the material into a sagger, install it in a kiln (downdraft kiln), and calcinate at 1100°C for 4 hours, cool the material, and Disintegration in the disintegrator (the processing output of the disintegrator is 1.5 tons / hour), modification. Heat the FT-4 aluminum-titanium composite coupling agent to 100°C for melting, adjust the flow rate of the automatic dosing pump, the flow rate of the FT-4 aluminum-titanium composite coupling agent is 15 kg / hour, and the flow rate of the silane coupling agent KH550 At 15 kg / hour, the two active agents are simultaneously sprayed into the dispersion machine barrel for activation treatme...

Embodiment 3

[0040]First, the natural powder quartz ore is hand-selected to remove red, yellow, brown and other color impurities, ball milled and classified to obtain 800 mesh (whiteness 72.9%) powder, and charcoal is added (the amount is 2.5% of the weight of the powder) ) and sodium chloride (the amount is 2.5% of the weight of the powder) and stir evenly, then put the material into a sagger, put it into a kiln (shuttle kiln), and calcinate at 1300°C for 6 hours, cool the material, and Disintegration in the disintegrator (the processing output of the disintegrator is 1.6 tons / hour), modification. Heat the FT-4 aluminum-titanium composite coupling agent to 100°C for melting, adjust the flow rate of the automatic dosing pump, the flow rate of the FT-4 aluminum-titanium composite coupling agent is 12 kg / hour, and the flow rate of the silane coupling agent KH570 At 12 kg / hour, the two active agents are simultaneously sprayed into the dispersion machine barrel for activation treatment to prod...

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Abstract

The invention discloses an integrated process technology for whitening, shaping and modifying natural powdery quartz, and belongs to the technical field of nonmetallic mineral further processing. The technology includes the steps that after raw powdery quartz ore is preliminarily selected, coarsely crushed, pulverized, graded, doped, calcined, scattered and modified, super-white and superfine active torispherical silica micro powder products are obtained. Dopant is composed of charcoal (or refined coal) and sodium chloride (or sodium carbonate), the dosage of charcoal (or refined coal) is 1-3% of the weight of power materials, the dosage of sodium chloride (or sodium carbonate) is 0.5-2% of the weight of the power materials, the calcination temperature is 900-1300 DEG C, and the heat-insulation time is 1-6 hours. By the adoption of the integrated process technology for whitening, shaping and modifying the natural powdery quartz, the white degrees of the products reach 92-98%, the content of SiO2 is 99.0-99.9%, the content of Fe2O3 is smaller than 0.1%, the fitness reaches 325-3000 mesh, and the shapes of granules is torispherical. The super-white and superfine active torispherical silica micro powder products can be massively used in the industrial fields of electronic and electrical materials, interior and exterior wall paint, fire resistant materials, polishing materials, plastic, rubber, adhesives and the like.

Description

technical field [0001] The invention belongs to the technical field of deep processing of non-metallic minerals, and relates to a technology integrating whitening, shaping and modification of natural powder quartz. Background technique [0002] High whiteness quartz powder is now widely used in interior and exterior wall coatings to improve its weather resistance and wear resistance. It can be used as a substitute for white carbon black and is gradually used in plastics, rubber and adhesives. It can improve the mechanics of products. Performance, improve product durability. The ultra-fine quartz powder after calcination and phase inversion can be used as an additive for amorphous siliceous refractory materials to improve the density and refractory performance of refractory materials. [0003] Natural powder quartz is a powdery microcrystalline siliceous rock formed by long-term natural weathering of quartz. It is widely used in coatings, abrasives, glass and fiberglass, cer...

Claims

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Application Information

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IPC IPC(8): C09C3/04C09C3/10C09C1/28
CPCC01P2004/32C01P2006/65C01P2006/80C09C1/28C09C3/006C09C3/041C09C3/043C09C3/10Y02P20/10
Inventor 李舟葛鹤松蔡有兴
Owner HUNAN JINMA NEW MATERIAL TECH CO LTD
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