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Cementing material capable of realizing fine-fraction tailing filling and preparation method thereof

A cementitious material and fine-grained technology, which is applied in the field of mining fillings, can solve the problems of polluting the environment and tailings occupying land, etc., and achieve the effects of prolonging the life of the pipeline, reducing the cost of water and mud discharge, and reducing stress concentration

Pending Publication Date: 2021-06-01
中科聚垚环保新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above technical problems, the present invention provides a cementitious material capable of filling fine-grained tailings and its preparation method, so as to make full use of fine-grained tailings and solve the problem of a large amount of tailings occupying land and polluting the environment. problems, increased filling strength

Method used

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  • Cementing material capable of realizing fine-fraction tailing filling and preparation method thereof
  • Cementing material capable of realizing fine-fraction tailing filling and preparation method thereof

Examples

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Effect test

Embodiment 1

[0029] A cementitious material capable of filling fine-grained tailings, comprising the following components in parts by weight: 18 parts of sintered desulfurization gypsum, 30 parts of Portland cement, 50 parts of slag powder, and 1 part of activator.

[0030] Sintered desulfurization gypsum is the product of flue gas desulfurization in the sintering process of iron and steel plants. After drying, the specific surface area of ​​the ground powder is more than 400 square meters.

[0031] Portland cement is 425# ordinary Portland cement.

[0032] Slag powder is finely ground blast furnace slag with a specific surface area of ​​over 450 square meters.

[0033] The activator is an alkaline activator industrial sodium sulfate.

Embodiment 2

[0035] A cementitious material capable of filling fine-grained tailings, comprising the following components in parts by weight: 31 parts of sintered desulfurized gypsum, 10 parts of Portland cement, 30 parts of slag powder, and 9 parts of activator.

[0036] Sintered desulfurization gypsum is the product of flue gas desulfurization in the sintering process of iron and steel plants. After drying, the specific surface area of ​​the ground powder is more than 400 square meters.

[0037] Portland cement is 425# ordinary Portland cement.

[0038] Slag powder is finely ground blast furnace slag with a specific surface area of ​​over 450 square meters.

[0039] The activator is an alkaline activator industrial sodium sulfate.

Embodiment 3

[0041] A cementitious material capable of filling fine-grained tailings, comprising the following components in parts by weight: 20 parts of sintered desulfurized gypsum, 25 parts of Portland cement, 40 parts of slag powder, and 6 parts of activator.

[0042] Sintered desulfurization gypsum is the product of flue gas desulfurization in the sintering process of iron and steel plants. After drying, the specific surface area of ​​the ground powder is more than 400 square meters.

[0043] Portland cement is 425# ordinary Portland cement.

[0044] Slag powder is finely ground blast furnace slag with a specific surface area of ​​over 450 square meters.

[0045] The activator is an alkaline activator industrial sodium sulfate.

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Abstract

The invention discloses a cementing material capable of realizing fine-fraction tailing filling and a preparation method of the cementing material. The cementing material comprises the following components in parts by weight: 18-31 parts of sintered desulfurized gypsum, 10-30 parts of Portland cement, 30-50 parts of slag powder and 1-9 parts of an exciting agent. According to the cementing material and the preparation method thereof disclosed by the invention, the fine-fraction tailings can be fully utilized, the problems that a large amount of tailings occupy land and pollute the environment are solved, the filling strength is improved, and the mining safety is improved.

Description

technical field [0001] The invention relates to the technical field of mining filling materials, in particular to a cementitious material capable of realizing fine-grained tailings filling and a preparation method thereof. Background technique [0002] For modern ore mining, due to the low grade of mined ore, it cannot be directly smelted, and must be processed to produce concentrate products that meet the smelting requirements, resulting in a large amount of tailings discharge. In order to improve the beneficiation efficiency, it is necessary to adopt different beneficiation processes, and the fineness of the discharged tailings varies, among which the finest tailings reach -325 mesh and more than 90%. At present, the main method of tailings utilization is mining underground filling. The existing filling method is to use filling material C (mixed with cement and slag powder) as the filling and consolidation cementitious material. The consolidation ability of the tailings i...

Claims

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Application Information

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IPC IPC(8): C04B28/02
CPCC04B28/02C04B2201/50C04B2111/00724
Inventor 张永刚王卫东张铭哲
Owner 中科聚垚环保新材料科技有限公司