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Novel method for combined use of soluble silicate, polyaluminum chloride and flocculant in multiple fields

A technology of polyaluminum chloride and silicate, applied in the field of application, can solve the problems of low extraction rate of lithium carbonate and the like

Pending Publication Date: 2022-04-12
牡丹江市海洋新材料科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] One of the raw materials for the production of lithium batteries is lithium carbonate, and the main raw material for extracting lithium carbonate is salt lake brine, but the extraction rate of lithium carbonate in salt lakes is relatively low in the prior art

Method used

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  • Novel method for combined use of soluble silicate, polyaluminum chloride and flocculant in multiple fields
  • Novel method for combined use of soluble silicate, polyaluminum chloride and flocculant in multiple fields
  • Novel method for combined use of soluble silicate, polyaluminum chloride and flocculant in multiple fields

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] laboratory experiment part

[0047] 1.1 Experimental purpose

[0048] Comparing the retention effect of soluble silicate, polyaluminum chloride, starch polymer combined with cationic polyacrylamide, to provide a basis for actual production.

[0049] Main raw materials and testing equipment

[0050] Softwood pulp: dryness is 30.67%, beating degree is 40°SR;

[0051] Calcium carbonate: the addition is 20% (relative to the dry fiber);

[0052] Sample A: Solid cationic polyacrylamide produced by BASF, Germany, with a molecular weight of 4.9 million and a cationic degree of 10%;

[0053] Sample B: 1. Soluble silicate solution solid content 25%

[0054] 2. The solid content of polyaluminum chloride is 29%

[0055] 3. Cationic starch polymer with a solid content of 50% and a charge density of 8.37μeq / L

[0056] Changchun Yueming GBJ-A fiber standard separator, beating degree tester, paper sample picker QYC II hydraulic press, flat paper dryer, Hangzhou Brocade TTM-500 ...

Embodiment 2

[0095] laboratory copy section

[0096] 110g corrugated cardboard

[0097] The purpose of the experiment: compare the blank sample before and after the addition of soluble silicate, polyaluminum chloride, and starch polymer to see the increase in weight and ash.

[0098] Raw material 1, A, soluble silicate B, polyaluminum chloride C starch polymer

[0099] 2. Recycled pulp (waste paper shell beating) 40%

[0100] Biopulp 60%

[0101]

[0102] Experimental results

[0103] 1. The weight of the paper used in combination with soluble silicate, polyaluminum chloride and starch polymer is 1.38g, and the weight of the paper not added in combination with soluble silicate, polyaluminum chloride and starch polymer is 1.24g , the weight gain is 0.14g. The weight gain per square meter is 14g, and the weight gain ratio is 11.29%.

[0104] 2. According to the production of 110 grams of paper, the converted area is 9091m 2 , the weight of one ton of paper increases by 127kg, and t...

Embodiment 3

[0108] Method steps for filler modification:

[0109] 1. Make the filler calcium carbonate into a 20% aqueous solution.

[0110] 2. Add 1.5kg--3.5kg polyaluminum chloride per ton of filler dry. well mixed.

[0111] 3. Add 2kg to 4kg of 25% sodium silicate per ton of filler. The modified filler can be directly added to the wet end papermaking system.

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Abstract

The invention relates to a novel method for combined use of soluble silicate, polyaluminum chloride and a flocculating agent in the fields of wet-end papermaking, sewage treatment and extraction of lithium carbonate from salt lake brine. A, a novel method is combined and used in the field of wet-end papermaking, the first-process retention rate of filler and fine fibers can reach 95%-98%, environmental pollution is reduced, and economic benefits are improved; and B, a novel method is combined and used in the field of sewage treatment, so that the dosage of chemicals can be reduced, and a brand new solution is provided for the existing sewage treatment technology. And C, the novel method is combined and used in the field of extraction of lithium carbonate from the salt lake brine, and salt lake brine ore without exploitation value can be changed into mineral products with exploitation value.

Description

technical field [0001] The present invention applies to: [0002] 1. Wet end papermaking field [0003] 2. Sewage treatment field [0004] 3. Extraction of lithium carbonate from salt lake brine Background technique (one) [0005] A. In the field of wet end papermaking, fillers need to be added when producing cultural paper, offset paper, electrostatic copy paper and other paper types. Under the existing technical conditions, cationic polyacrylamide is used as flocculant, which is called retention and drainage aid in the industry. The retention rate of fillers is mostly about 65%-75%, and most of the rest become waste residues, commonly known as white mud, which are discharged into sewage The treatment plant conducts harmless treatment. Fine fibers in white mud account for 8% - 9%, and the rest are calcium carbonate, talcum powder and other substances. Enterprises spend a lot of manpower, material resources and funds to deal with waste residue. [0006] B. In the prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H17/66D21H17/28D21H21/10C02F1/52C02F1/56
Inventor 付景仁其他发明人请求不公开姓名
Owner 牡丹江市海洋新材料科技有限责任公司