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Curing agent for cementing and filling auricupride neutralization residue in gob

A cemented filling and goaf technology, applied in the field of gold and copper mines, can solve the problems of less application of industrial waste slag, high economic cost of cementitious materials, indirect discharge of resource waste, etc., to ensure rapid growth, ensure stable growth, reduce The effect of heat of hydration

Inactive Publication Date: 2019-02-12
铜陵建研坤晟科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the existing high-concentration cemented filling technology of the Zijinshan Gold-Copper Mine still has the following deficiencies: cement is the main cement material, and a large amount of cement is used while digesting tailings, resulting in resource consumption and indirect waste discharge; A certain amount of neutralized slag has not been mixed into the cementitious material, and the application of other industrial waste residue is less; the economic cost of the cementitious material is relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The curing agent used for gold-copper ore neutralization slag cementation filling goaf, including the following components by weight content: the mass ratio of activator, neutralization slag and granulated blast furnace slag is 1:1:4, neutralization The slag is solid waste after acid wastewater treatment in the Zijinshan Gold-Copper Mine, the content of calcium sulfate dihydrate is ≥55%, and the granulated blast furnace slag is S95 grade slag fine powder, with a specific surface area of ​​420m 2 / kg.

[0026] The components and weight content of the activator are: 18% sodium sulfate, 32% silica fume, 10% rapid hardening cement, 32% alum, and 8% quicklime. Among them, sodium sulfate is anhydrous Glauber's salt, which does not contain crystal water; the specific surface area of ​​micro-silica fume is 6000m 2 / kg, the particle size is 30μm, and the silica content is greater than 50%; the rapid-hardening cement adopts rapid-hardening sulfoaluminate cement, and the 3d stren...

Embodiment 2

[0028] The curing agent used for gold-copper ore neutralization slag cementation filling goaf, including the following components by weight content: the mass ratio of activator, neutralization slag and granulated blast furnace slag is 1:2:6, neutralization The slag is the solid waste after acid wastewater treatment in the Zijinshan Gold-Copper Mine, the content of calcium sulfate dihydrate is ≥55%, and the granulated blast furnace slag is S95 grade slag micropowder, with a specific surface area of ​​450m 2 / kg.

[0029] The composition and weight content of the activator are: 20% sodium sulfate, 35% silica fume, 50% rapid hardening cement, 75% alum, and 10% quicklime. Among them, sodium sulfate is anhydrous Glauber's salt, which does not contain crystal water; the specific surface area of ​​micro-silica fume is 16000m 2 / kg, the particle size is 60 μm, and the silica content is greater than 50%; the rapid-hardening cement adopts one or more of rapid-hardening sulfoaluminate c...

Embodiment 3

[0031] The curing agent used for gold-copper ore neutralization slag cementation filling goaf, including the following components by weight content: the mass ratio of activator, neutralization slag and granulated blast furnace slag is 1:3:6, neutralization The slag is solid waste after acid wastewater treatment in the Zijinshan Gold-Copper Mine, and the content of calcium sulfate dihydrate is ≥55%. 2 / kg.

[0032] The components and weight content of the activator are: 5% sodium sulfate, 1% silica fume, 1% rapid hardening cement, 1% alum, and 2% quicklime. Among them, sodium sulfate is anhydrous Glauber's salt, which does not contain crystal water; the specific surface area of ​​micro-silica fume is 400m 2 / kg, the particle size is 0.5μm, and the silica content is greater than 50%; the rapid-hardening cement adopts one or more of rapid-hardening sulfoaluminate cement, rapid-hardening Portland cement or rapid-hardening fluoroaluminate cement , 3d strength ≥ 30MPa; alum is mad...

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PUM

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Abstract

The invention discloses a curing agent for cementing and filling an auricupride neutralization residue in a gob. The curing agent is prepared from the following components in percentage by weight: 5%to 30% of neutralization residue, 50% to 80% of granulated blast-furnace slag and 5% to 30% of excitant, wherein the excitant is prepared from the following components in percentage by weight: 5% to 20% of sodium sulfate, 0% to 35% of micro silica fume, 0% to 50% of rapid hardening cement, 0% to 75% of alum and 2% to 10% of quick lime. The curing agent can be used for exciting the activity of theauricupride neutralization residue, and is low-cost; and further, raw materials are easily obtained.

Description

technical field [0001] The invention belongs to the technical field of gold-copper ore, and in particular relates to a curing agent used for neutralizing slag in gold-copper ore and cementing and filling goafs. Background technique [0002] In recent years, the output of neutralized slag in the Zijinshan Gold-Copper Mine has been increasing day by day, and the annual output has exceeded one million tons. Although a lot of research work has been done on its recycling, the overall utilization rate is not high, and the neutralized slag is still Zijinshan Gold and Copper Mine currently has the largest output, the largest stockpile, and the lowest comprehensive utilization rate of solid waste. If it can be used as a resource and comprehensive utilization, it will save both energy and resources. The circular economy policy of harmful utilization minimizes pollution and waste discharge while reducing the consumption of primary resources. [0003] At present, the high-concentration...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02
CPCC04B28/02C04B22/064C04B22/147C04B22/142C04B18/146C04B18/141C04B18/144
Inventor 王明远王东旭李龙飞陈伟吕杨烁
Owner 铜陵建研坤晟科技有限公司
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