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Method for preparing ultra-silicon powder from solid waste

A technology of solid waste and super silicon powder, applied in the field of silicon powder materials, can solve problems such as waste of resources, and achieve the effect of ensuring output purity and excellent specific adsorption of alkali metals

Inactive Publication Date: 2020-12-08
刘树峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

We are a large agricultural country, which produces hundreds of millions of tons of various agricultural wastes every year. However, most of the agricultural wastes are directly abandoned in the fields, causing serious resource waste and environmental problems. Therefore, how to deal with agricultural solid waste Reasonable and effective use of resources is a major problem that needs to be solved urgently

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A kind of method utilizing solid waste to prepare super silicon powder, described method comprises the following steps:

[0045] Step 1, extracting solid waste and collecting solid treatment liquid;

[0046] Step 2, adding a metal adsorbent to the solid treatment solution for purification to obtain a purified extract;

[0047] Step 3, modifying the purified extract to obtain super silica powder.

[0048] Wherein, the solid waste refers to waste such as fruit shells and cores, straw, litter and weeds formed in the process of agricultural production and agricultural product processing.

[0049] The step 1 is specifically:

[0050] (1) Crush the solid waste into powder after removing impurities, put it into deionized water, add sulfuric acid solution until the pH of the liquid reaches 2.0-3.0, stir and disperse until uniform, heat up to 70-80°C, and stir for 4-8 hours, After naturally cooling to room temperature, filter and collect the solid to obtain the first processe...

Embodiment 2

[0079] A kind of method utilizing solid waste to prepare super silicon powder, described method comprises the following steps:

[0080] Step 1, extracting solid waste and collecting solid treatment liquid;

[0081] Step 2, adding a metal adsorbent to the solid treatment solution for purification to obtain a purified extract;

[0082] Step 3, modifying the purified extract to obtain super silica powder.

[0083] Wherein, the solid waste refers to waste such as fruit shells and cores, straw, litter and weeds formed in the process of agricultural production and agricultural product processing.

[0084] The step 1 is specifically:

[0085] (1) Crush the solid waste into powder after removing impurities, put it into deionized water, add sulfuric acid solution until the pH of the liquid reaches 2.0-3.0, stir and disperse until uniform, heat up to 70-80°C, and stir for 4-8 hours, After naturally cooling to room temperature, filter and collect the solid to obtain the first processe...

Embodiment 3

[0114] A kind of method utilizing solid waste to prepare super silicon powder, described method comprises the following steps:

[0115] Step 1, extracting solid waste and collecting solid treatment liquid;

[0116] Step 2, adding a metal adsorbent to the solid treatment solution for purification to obtain a purified extract;

[0117] Step 3, modifying the purified extract to obtain super silica powder.

[0118] Wherein, the solid waste refers to waste such as fruit shells and cores, straw, litter and weeds formed in the process of agricultural production and agricultural product processing.

[0119] The step 1 is specifically:

[0120] (1) Crush the solid waste into powder after removing impurities, put it into deionized water, add sulfuric acid solution until the pH of the liquid reaches 2.0-3.0, stir and disperse until uniform, heat up to 70-80°C, and stir for 4-8 hours, After naturally cooling to room temperature, filter and collect the solid to obtain the first processe...

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Abstract

The invention relates to the field of silicon powder materials, in particular to a method for preparing ultra-silicon powder from solid wastes. The method comprises the following steps: step 1, carrying out extraction treatment on the solid wastes, and collecting a solid treatment solution; step 2, adding a metal adsorbent into the solid treatment liquid for purification treatment to obtain a purified extract; and 3, carrying out modification treatment on the purified extract to obtain the ultra-silicon powder. The solid wastes refer to wastes such as fruit shells and kernels, straws, dry branches and fallen leaves, weeds and the like formed in agricultural production and agricultural product processing processes. According to the method, a chemical reagent treatment method is used, the defects generated by sintering preparation are avoided, impurities such as alkali metal are removed, and the crystallization phenomenon generated during high-temperature sintering can be avoided so thatthe quality of silicon dioxide is guaranteed.

Description

technical field [0001] The invention relates to the field of silicon powder materials, in particular to a method for preparing super silicon powder from solid waste. Background technique [0002] Agricultural solid waste refers to the general term for waste generated in the process of agricultural production and agricultural product processing, mainly including fruit shells and cores, straw, rice husks, corncobs, branches and leaves, and weeds. These agricultural solid wastes are rich in carbon and silicon elements, which are important carbon and silicon resources, and because agricultural solid wastes have the advantages of huge quantity, renewable, short regeneration cycle, biodegradable, rich in carbon and silicon elements, etc. , which has become a research hotspot. We are a large agricultural country, which produces hundreds of millions of tons of various agricultural wastes every year. However, most of the agricultural wastes are directly abandoned in the fields, caus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/18
CPCC01B33/18C01P2006/80
Inventor 刘树峰
Owner 刘树峰
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