Application of active silica fume

A technology of active silica and micropowder, which is applied in the field of patents for new uses of active silica micropowder, can solve the problems of low added value in utilization, achieve a smaller friction coefficient, increase tensile modulus of elasticity, and increase flexural modulus of elasticity Effect

Inactive Publication Date: 2014-02-19
上海山鹰环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the advancement and development of science and technology, in the process of environmental protection and treatment of high energy consumption flue gas emissions, it is found that silica micropowder in fume and dust wastes discharged unorganized can be used as mineral admixtures for making concrete and refractory materials, replacing The mechanically ground mineral powder makes effective use of the waste silica powder, but the above-mentioned utilization has the problem of low added value

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: In the mixing of natural rubber and regenerated rubber, 35% of mineral powder and 15% of white carbon black filler added in the mixing of natural rubber and regenerated rubber are replaced by 20% active silica micropowder , its processing and preparation method is the same as that of adding white carbon black. The processed rubber tire material surface is smooth and clean without honeycomb. The elongation of rubber is increased by 15.7% compared with the traditional mechanical processing powder as filler; the tear resistance is increased by 13.8%; the anti-death performance is increased by 30% . And increase more than 50% in the wear-resistant agent of rubber products. The active silica micropowder used is collected by a silicon-based electric furnace flue gas purification and dust separation and purification powder set to obtain a gaseous state, an ultrafine powder with a three-dimensional spherical structure of non-crystalline cotton wool. For the spec...

Embodiment 2

[0015] Example 2: When active silica powder is used in modified plastics (PP) and special engineering plastics (PPS), active silica powder is added according to 8-15% of the original material weight, and the injection pressure of 70Mpa can be used. Blended materials with better comprehensive properties. Pozzolanic activity and high fluidity of active silica powder can fully and evenly disperse silica powder into (PP) / (PPS) to improve its toughness, thereby improving mechanical properties, and at the same time making the surface of the material denser and smoother. The coefficient becomes smaller. The impact strength is increased by 27.3%; the tensile strength is increased by 13.4%; the tensile elastic modulus is increased by 6.0%; the bending strength is increased by 6.0%; the bending elastic modulus is increased by 7.4%. The active silicon dioxide micropowder contains SiO 2 >97.5%; Fe 2 o 3 、Al 2 o 3 、TiO 2 , CaO, MgO, K 2 O, Na 2 O.P 2 o 5 , CO, S 2 o 3 , P, ...

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PUM

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Abstract

The invention discloses application of active silica fume as rubber and white carbon black which is an engineering plastic additive. Based on researches of the invention, silica fume collected by using smoke and dust separation and purification power complete equipment has a smaller granularity of 0.10-0.255mu m and an active index higher than 120%, achieves the activity of natural cinerite and materialization indexes similar to fumed silica (white carbon black), but has cost far lower than that of the white carbon black produced specifically. In addition, proved by the experiments of Shanghai Rubber Industry Institute, after the white carbon black in natural rubber and regenerated rubber is replaced by the active silica fume, the elongation, tear resistance and death resistance of the rubber can be improved greatly and the quality of the rubber can be guaranteed. The active silica fume can replace the function of the white carbon black in the rubber and engineering plastics, can replace powdery mineral filler ground by the traditional mechanical power, improve the cost performance of materials, and reduce the cost of materials.

Description

technical field [0001] The invention relates to an application of active silicon dioxide micropowder, which belongs to the patent for new use of active silica micropowder. Background technique [0002] The smelting of ferroalloy is to reduce quartz ore to metal silicon and ferrosilicon by electric arc furnace and submerged electric furnace at a high temperature of 2000 ° C. During the smelting process, about 10-15% of silicon vapor enters the flue and is released from The chimney is discharged into the atmosphere, and the exhausted silicon vapor is purified by flue gas, and the dust separation and purification powder is collected by a complete set of equipment to obtain active silica powder. The existing exhaust silica powder is mostly treated as waste flue gas dust. failed to be effectively utilized. However, with the advancement and development of science and technology, in the process of environmental protection and treatment of high energy consumption flue gas emissions...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L21/00C08L7/00C08L17/00C08L101/00C08L23/12C08L81/02C08K3/36
Inventor 屠庆模
Owner 上海山鹰环保科技股份有限公司
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