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Method for recycling waste silicon slag discharged in production of zirconyl chloride

A zirconium oxychloride and silicon slag technology, applied in chemical instruments and methods, inorganic chemistry, zirconium compounds, etc., can solve the problems of increasing production equipment, waste of resources, environment, pollution, etc., to save chemical raw materials and achieve environmental benefits. Effect

Active Publication Date: 2013-09-18
山东广通新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that it is necessary to increase the production equipment and process operation steps, only part of the soluble zirconium and part of the unreacted zircon sand can be recycled, most of the silicon slag slurry flows out through the overflow port, and the neutral waste silicon slag is still discarded
Waste of resources and environmental pollution still exist

Method used

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  • Method for recycling waste silicon slag discharged in production of zirconyl chloride
  • Method for recycling waste silicon slag discharged in production of zirconyl chloride
  • Method for recycling waste silicon slag discharged in production of zirconyl chloride

Examples

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Effect test

Embodiment 1

[0110] The method for recycling the waste silicon slag discharged in the production of zirconium oxychloride of the present invention comprises the following steps:

[0111] ①. Pretreatment of waste silicon slag

[0112] a. Neutralization

[0113]Put the waste silicon slag to be treated into the reaction kettle, add an appropriate amount of water, stir and mix evenly, adjust the pH value to 6.5-7.0 with sodium hydroxide solution, and prepare for filtration and washing;

[0114] b. Filtration and washing

[0115] After centrifuging and washing the material reconciled in step a, the filter cake is used for the subsequent preparation of sodium silicate solution;

[0116] c. Sampling test

[0117] Take out the sample from the filter cake of step b, measure the solid content in the filter cake, calculate the moisture content; then measure the SiO in the solid waste silicon slag 2 and Na 2 The content of O is used for calculation and measurement of subsequent ingredients;

[0...

Embodiment 2

[0155] The method for recycling the waste silicon slag discharged in the production of zirconium oxychloride of the present invention comprises the following steps:

[0156] ①. Pretreatment of waste silicon slag

[0157] a. Neutralization

[0158] Put the waste silicon slag to be treated into the reaction kettle, add an appropriate amount of water, stir and mix evenly, adjust the pH value to 7.0 with sodium hydroxide solution, and prepare for filtration and washing;

[0159] b. Filtration and washing

[0160] After centrifuging and washing the material reconciled in step a, the filter cake is used for the subsequent preparation of sodium silicate solution;

[0161] c. Sampling test

[0162] Take out the sample from the filter cake of step b, measure the solid content in the filter cake, calculate the moisture content; then measure the SiO in the solid waste silicon slag 2 and Na 2 The content of O is used for calculation and measurement of subsequent ingredients;

[0163...

Embodiment 3

[0201] The method for recycling the waste silicon slag discharged in the production of zirconium oxychloride of the present invention comprises the following steps:

[0202] ①. Pretreatment of waste silicon slag

[0203] a. Neutralization

[0204] Put the waste silicon slag to be treated into the reaction kettle, add an appropriate amount of water, stir and mix evenly, adjust the pH value to 7.0 with sodium hydroxide solution, and prepare for filtration and washing;

[0205] b. Filtration and washing

[0206] After centrifuging and washing the material reconciled in step a, the filter cake is used for the subsequent preparation of sodium silicate solution;

[0207] c. Sampling test

[0208] Take out the sample from the filter cake of step b, measure the solid content in the filter cake, calculate the moisture content; then measure the SiO in the solid waste silicon slag 2 and Na 2 The content of O is used for calculation and measurement of subsequent ingredients;

[0209...

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Abstract

The invention relates to a method for recycling waste silicon slag discharged in production of zirconyl chloride and belongs to a method for recycling waste slag discharged in the preparation process of a zirconium compound. The method is characterized by comprising the following steps of: firstly, converting waste silicon slag into an aqueous solution of sodium silicate, filtering, and then using the residue filtered out directly as a raw material for preparing the zirconyl chloride product; performing crystallization treatment on the filtrate, filtering the crystallized product, drying the obtained filter cake, and preparing all of the filter cake into a 4A molecular sieve product; and then realizing complete recycling of the waste silicon slag. The method for recycling waste silicon slag discharged in the production of zirconyl chloride provided by the invention is low in equipment investment and simple and convenient in operation steps. As a result, the environmental pollution of the waste silicon slag discharged in the production of zirconyl chloride in the prior art on soil, water and atmosphere is avoided. The production cost of the zirconyl chloride is obviously reduced, the economic benefit of a zirconyl chloride production enterprise is improved and the development of the zirconyl chloride industry is promoted.

Description

technical field [0001] The invention relates to a method for recycling waste silicon slag discharged from the production of zirconium oxychloride. The invention discloses a resource utilization method of waste residue discharged during the preparation process of zirconium compounds. Background technique [0002] Zirconium oxychloride (ZrOCl 2 ·8H 2 O) is an important zirconium chemical and a raw material for the synthesis of zirconium dioxide and many zirconium salts. It can be used as paint drying agent, rubber additive, refractory material, ceramic pigment, lubricant; it is widely used in ceramics, leather tanning, electronics, jewelry, metallurgical industry, catalyst, medical treatment, automobile exhaust purification, etc. Moreover, zirconium oxychloride is also an important raw material for preparing atomic-level metal zirconium and hafnium. [0003] Zirconium oxychloride (ZrOCl 2 ·8H 2 O) It has a wide range of uses, and the demand in domestic and foreign market...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G25/00
Inventor 尹海顺房永民李园园刘良良李洁王德昌
Owner 山东广通新材料有限公司
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