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A kind of preparation method of mine filling slurry

A mine and slurry technology, which is applied in the field of preparation of mine filling slurry, can solve the problems of poor durability, high energy resource consumption, poor mechanical properties, etc., and achieve good roof connection rate, environmental protection, and good fluidity Effect

Active Publication Date: 2019-11-05
GUYAN TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, the cement production process is characterized by high energy resource consumption and serious environmental pollution, and the cement application process is characterized by poor mechanical properties and durability performance that needs to be improved, etc.

Method used

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  • A kind of preparation method of mine filling slurry
  • A kind of preparation method of mine filling slurry
  • A kind of preparation method of mine filling slurry

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Embodiment Construction

[0019] A preparation method of mine filling slurry, comprising the following steps:

[0020] 1) Mix tailings gelling agent with mine tailings;

[0021] 2) adding water and mixing to obtain mine filling slurry;

[0022] The tailings gelling agent is composed of the following raw materials in parts by mass: 75-90 parts of blast furnace slag, 1-10 parts of quicklime, 1-7 parts of desulfurized gypsum, 1-7 parts of cement clinker, 0-5 parts of Glauber's salt .

[0023] Preferably, the chemical composition of mine tailings is: 26.5wt% to 35.5wt% SiO 2 , 5.0wt% ~ 9.5wt% Al 2 o 3 , 3.5wt% ~ 6.5wt% MgO, 4.3wt% ~ 6.5wt% SO 3 , 0.03wt% ~ 0.10wt% P 2 o 5 , 3.5wt% ~ 5.5wt% Fe 2 o 3 , 15.0wt% ~ 20.0wt% CaO, 0.5wt% ~ 1.5wt% PbO, 0.2wt% ~ 1.0wt% TiO 2 , and the remainder is loss on ignition.

[0024] Preferably, the particle size distribution of mine tailings is: 0 μm to 5 μm accounts for 5.19 wt%, 5 μm to 10 μm accounts for 3.89 wt%, 10 μm to 20 μm accounts for 9.4 wt%, 20 μm to 5...

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Abstract

The invention discloses a preparation method for filling slurry used for a mine. The preparation method comprises the following steps: 1) mixing a gelling agent for tailings with mine tailings; and 2) adding water and carrying out mixing so as to obtain the filling slurry for the mine. The gelling agent for tailings is composed of the following raw materials: blast furnace slag, quicklime, desulfurized gypsum, cement clinker and mirabilite. According to the invention, materials like the blast furnace slag and quicklime are used for development of the novel filling slurry applicable to mines; the prepared filling slurry has better fluidity and higher strength; and a filling body has better top filling rate after curing, can replace cement, and is beneficial for protection of environment.

Description

technical field [0001] The invention relates to a preparation method of mine filling slurry. Background technique [0002] Under the momentum of the sustainable development of my country's social economy, the mining industry is also developing. Under the fierce market competition, my country's mining enterprises are constantly updating mining technology. In the application of mining technology, cement cemented filling technology has been widely used. It is a relatively advanced and safe mining technology. In practical applications, it can improve the recovery rate of minerals and contribute to the overall efficiency and safety of mining projects. There is a big improvement, which enables mining companies to obtain higher economic benefits and promotes the stable development of mining companies; [0003] While cement has made great contributions to the progress of human society and economic development, it has increasingly exposed a series of problems in its production and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/21
CPCC04B7/21Y02P40/10
Inventor 陈锡麟陈忠平李鹏何威冯波宇伍航宇黄小波黄威龙张善硕赵泽民
Owner GUYAN TECH DEV CO LTD