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Grinding aid for preparing cementing material for filling and dry stacking of mines

A technology for cementitious material and mine filling, which is used in the field of preparation of mine filling, grinding aid, and grinding aid for cementitious materials for dry heap, can solve the problems of difficult grinding and easy paste balls, etc., to improve fluidity, The effect of improving early strength and improving grinding efficiency

Active Publication Date: 2016-07-13
SINOSTEEL MAANSHAN INST OF MINING RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a kind of cementitious material for mine filling and dry stacking to solve the problem that the mixed material composed of water slag, quicklime, water glass, etc. is easy to ball and hard to grind in the grinding process. Grinding aids can significantly improve the fluidity of the cementitious material, increase the grinding efficiency of the ball mill, increase the output of the mill, can significantly improve the early strength of the cementitious material, and appropriately increase the later strength

Method used

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  • Grinding aid for preparing cementing material for filling and dry stacking of mines
  • Grinding aid for preparing cementing material for filling and dry stacking of mines

Examples

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Effect test

Embodiment 1

[0030] Example 1 is used to prepare a grinding aid for cementing materials for mine filling and dry pile, and its composition is as follows:

[0031] Methacrylic acid modified polymeric polyol 25%

[0032] Modified diethanol monoisopropanolamine 10%

[0033] Molasses 15%

[0034] Sodium thiocyanate 7%

[0035] Sodium metaaluminate 7%

[0036] Sodium fluorosilicate 7%

[0037] The balance is water, and the total amount is 100%.

[0038] The preparation method of methacrylic acid modified polymeric polyol is as follows: In the reactor, add 1.3 parts of methacrylic acid and 1 part of polymeric polyol, stir evenly, and react at 70-80°C for 1.5 hours to obtain methacrylic acid modified Polymeric polyols.

[0039] The preparation method of the present invention is as follows: sodium thiocyanate, sodium metaaluminate and sodium fluorosilicate are added to water according to the formula ratio, and after stirring and dissolving, the formula ratio is stirred while adding sucrose molasses, N,N-bis(2-...

Embodiment 2 to Embodiment 6

[0041] According to the content of each component specified in Table 1 below, the products of Example 2 to Example 6 were prepared according to the method of Preparation Example 1, and the grinding aid products 2 to 6 of the cementing material for mine filling and dry pile were obtained respectively .

[0042]

[0043] The grinding aid products prepared in Examples 1 to 6 were blended into the mixed material according to 0.03% of the mass of the gelling material, and ball milled to produce 6 kinds of gelling materials. Stir and mix the gelling agent with 68% full tailings at a lime-sand ratio of 1:8, which is the slurry for mine filling. The slurry is put into a test mold of 70.7×70.7×70.7, at a temperature of 20℃ and a humidity of 90 % Curing in a curing box, demoulding after 24 hours, and continue curing in a constant temperature and humidity box under this condition to test the compressive strength of different childbearing ages. The products produced with cement grinding aid...

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Abstract

The invention discloses a grinding aid for preparing a cementing material for filling and dry stacking of mines. The grinding aid comprises the following raw material components in percentage by mass: 20%-30% of modified polymeric glycol, 5%-15% of diethanolisopropanolamine, 10%-20% of molasses, 5%-10% of sodium sulfocyanate, 5%-10% of sodium metaaluminate, 5%-10% of sodium fluosilicate and the balance of water. According to the grinding aid provided by the invention, the problems that a mixed material of water granulated slag, quick lime, water glass and the like is liable to cause ball pasting and is difficult to be finely ground in a grinding process are solved, the fluidity of the cementing material can be remarkably improved, the grinding efficiency of a ball mill can be improved, the machine-hour yield of the ball mill can be increased, the early strength of the cementing material can be remarkably improved, and the long-term strength of the cementing material can be properly improved.

Description

Technical field [0001] The invention belongs to the technical field of powder preparation, and specifically relates to a grinding aid, in particular to a grinding aid for preparing cementing materials for mine filling and dry heap by grinding water slag, quicklime and other mixtures. Background technique [0002] With the rapid development of modern technology and industrial production, the demand for minerals has increased rapidly. The surface damage and tailings discharge caused by the development and utilization of metal mineral resources have brought many problems such as resources, environment and safety. By using all tailings to effectively fill the mined-out area, the environmental and safety problems caused by the mining of mineral resources can be fundamentally solved, and at the same time, the mineral resources can be fully recovered, which is helpful to the promotion of mining industry and resources, environment, safety and economy. The coordinated development of China...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/24C04B103/52
CPCC04B40/0039C04B2103/52C04B24/24C04B24/122C04B24/10C04B22/14C04B22/126C04B22/0093
Inventor 杨晓军徐修平刘龙徐静华超朱君星曾申进李波
Owner SINOSTEEL MAANSHAN INST OF MINING RES
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