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A composite cementing material and a method for cementing high-sulfur ultra-fine lead-zinc ore tailings

A technology of lead-zinc ore and composite glue, which is applied in the field of high-sulfur ultra-fine particle lead-zinc ore tailings underground cementing filling and composite cementing materials, and can solve the problems of poor consolidation effect of high-sulfur ultra-fine particle lead-zinc ore tailings , to achieve high comprehensive utilization rate, simple production process, and reduce cementing cost

Active Publication Date: 2022-04-05
SHENZHEN ZHONGJIN LINGNAN NONFEMET COMPANY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the problems of poor consolidation effect of high-sulfur ultra-fine particle lead-zinc ore tailings in the above-mentioned prior art, the first object of the present invention is to provide a cementing and filling system for high-sulfur ultra-fine particle lead-zinc ore tailings underground. Cementing material, the raw material of the cementing material is easy to obtain, low in cost, and has a good consolidation effect, and can form a high-strength, stable cemented body

Method used

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  • A composite cementing material and a method for cementing high-sulfur ultra-fine lead-zinc ore tailings
  • A composite cementing material and a method for cementing high-sulfur ultra-fine lead-zinc ore tailings
  • A composite cementing material and a method for cementing high-sulfur ultra-fine lead-zinc ore tailings

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Experimental program
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Effect test

Embodiment 1

[0031] The following raw materials are used in terms of mass percentage: fly ash 15%, steel slag 20%, water-quenched blast furnace slag 35%, desulfurized gypsum (CaSO 4 2H 2 O content ≥ 93%) 18%, quicklime 9%, sodium carbonate 3%, put fly ash, steel slag, desulfurization gypsum, quicklime in the planetary ball mill from the above-mentioned raw materials, stir twice at intervals of 20min, each stirring 30min, The prepared mixture A was then mixed with water-quenched blast furnace slag and sodium carbonate, and stirred for 10 minutes with an SM-500 test mill to obtain a cemented material.

[0032] The tailings of high-sulfur ultra-fine particle lead-zinc ore are pretreated by crushing and screening. Under the conditions of a lime-sand ratio of 1:4 and a concentration of 58%, the tailings, cementing materials, and tap water are stirred into a slurry. According to the "Tailings Filling Experiment Operation Specification requires forming experiment, test block size 70.7mm×70.7mm×7...

Embodiment 2

[0039] The following raw materials are used in terms of mass percentage: fly ash 15%, steel slag 20%, water-quenched blast furnace slag 35%, desulfurized gypsum (CaSO 4 2H 2O content ≥ 93%) 18%, quicklime 9%, sodium hydroxide 3%, put the fly ash, steel slag, desulfurized gypsum and quicklime in the planetary ball mill from the above raw materials, stir twice at intervals of 20min, each time for 30min , the prepared mixture A was mixed with water-quenched blast furnace slag and sodium hydroxide, and stirred with SM-500 test mill for 10 minutes to obtain cemented material.

[0040] The tailings of high-sulfur ultra-fine particle lead-zinc ore are pretreated by crushing and sieving. Under the conditions of a lime-sand ratio of 1:4 and a concentration of 58%, the tailings, cementing materials, and tap water are stirred into a slurry. Filling Experiment Operation Specification requires forming experiment, test block size 70.7mm×70.7mm×70.7mm, curing at room temperature for 24h to ...

Embodiment 3

[0047] The following raw materials are used in terms of mass percentage: fly ash 15%, steel slag 20%, water-quenched blast furnace slag 35%, desulfurized gypsum (CaSO 4 2H 2 O content ≥ 93%) 18%, quicklime 9%, sodium hydroxide 3%, put the fly ash, steel slag, desulfurized gypsum and quicklime in the planetary ball mill from the above raw materials, stir twice at intervals of 20min, each time for 30min , the prepared mixture A was mixed with water-quenched blast furnace slag and sodium hydroxide, and stirred with SM-500 test mill for 10 minutes to obtain cemented material.

[0048] The tailings of high-sulfur ultra-fine particle lead-zinc ore are pretreated by crushing and sieving. Under the conditions of a lime-sand ratio of 1:4 and a concentration of 58%, the tailings, cementing materials, and tap water are stirred into a slurry. Filling Experiment Operation Specification requires forming experiment, test block size 70.7mm×70.7mm×70.7mm, curing at room temperature for 24h to...

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Abstract

The invention discloses a composite cementing material and a method for cementing high-sulfur ultrafine lead-zinc ore tailings. The composite cementing material is composed of fly ash, steel slag, mineral powder, desulfurized gypsum, quicklime, activator and the like. The composite cementing material mainly uses industrial waste residues as raw materials, realizes the purpose of treating waste with waste, fully recycles resources, conforms to the concept of sustainable development, and has good social and economic benefits, and the composite cementing material It can effectively consolidate high-sulfur ultra-fine lead-zinc ore tailings, and the resulting cemented solidified body has the characteristics of high early strength, stable growth in later strength, and good durability.

Description

technical field [0001] The invention relates to a composite cementing material, in particular to a composite cementing material used for cementing high-sulfur ultra-fine grain lead-zinc ore tailings, and also relates to a method for underground cementing and filling of high-sulfur ultra-fine grain lead-zinc mine tailings, belonging to Technical field of solid waste treatment. Background technique [0002] Tailings is the solid waste that is discharged from the concentrator after grinding the ore finely and extracting useful components using specific production processes and technologies. In the process of lead-zinc mining, as the mining depth increases, the ore grade changes, and the mine changes the beneficiation process, which causes the properties of the tailings used for filling in the mine to change, and the particle size of the tailings becomes finer. As the concentration decreases, the quality of the filling body decreases, and as the mining depth increases, the fill...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/08
CPCC04B28/082C04B2201/50C04B2111/00724C04B18/08C04B18/142C04B22/145C04B22/064C04B22/10C04B22/062
Inventor 张木毅田志刚黄沛生方振鹏梁德义杜向红汪韦兴周洪洋张炎吴泽群
Owner SHENZHEN ZHONGJIN LINGNAN NONFEMET COMPANY
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