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A solid waste cementitious material based on sulfate excitation

A technology of sulfate excitation and cementitious materials, applied in cement production and other directions, can solve the problems of high price, low economy, and large amount of water-reducing agent, and achieve strong cementing ability, realize economic benefits, and shorten initial setting time. Effect

Active Publication Date: 2021-10-08
广东同创科鑫环保有限公司
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  • Abstract
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Problems solved by technology

However, the amount of water reducing agent is more, the price is more expensive, and the economy is lower

Method used

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  • A solid waste cementitious material based on sulfate excitation
  • A solid waste cementitious material based on sulfate excitation

Examples

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Effect test

preparation example Construction

[0029] A kind of preparation method of solid waste cementitious material based on sulfate excitation, comprises the following steps:

[0030] 1) According to the aforementioned composition, weighing blast furnace slag, limestone, gypsum, admixture and water reducer, mixing, to obtain sulfate-activated gelling material;

[0031] 2) Mix and stir the sulfate-activated cementitious material and mine tailings according to the mass ratio of 1: (3-18);

[0032] 3) Add water and mix and stir to obtain solid waste gelling material based on sulfate excitation.

[0033] Preferably, in step 3) of the solid waste cementitious material preparation method, the water-cement ratio is (0.6-0.8): 1, and the water-cement ratio is the sum of the mass of water and solid components, sulfate-activated cementitious materials and mine tailings quality ratio.

preparation example 1

[0036] Mix 57 parts by mass of blast furnace slag, 14 parts by mass of limestone, 25 parts by mass of gypsum, 2 parts by mass of admixture and 2 parts by mass of water reducer to prepare a sulfate-activated gelling material.

preparation example 2

[0038] Mix 50 parts by mass of blast furnace slag, 16 parts by mass of limestone, 30 parts by mass of gypsum, 3 parts by mass of admixture and 1 part by mass of water reducer to prepare a sulfate-activated gelling material.

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Abstract

The invention discloses a sulfate-based solid waste gelling material. The invention firstly discloses a sulfate activated gelling material, which is composed of the following raw materials: blast furnace slag, limestone, gypsum, admixture and water reducing agent. The invention also discloses a solid waste gelling material containing the sulfate-activated gelling material. At the same time, the preparation method of the solid waste gelling material based on sulfate excitation is also disclosed. Compared with the solid waste cementitious material stimulated by silicate, the solid waste cementitious material stimulated by sulfate of the present invention has better fluidity, and has obvious advantages in long-distance pipeline transportation; the initial setting time and final setting time have obvious differences. The shortening can meet the actual production needs of the mine and fully improve the production efficiency; the compressive strength is higher, the cementing ability is stronger, and it can support larger mine loads.

Description

technical field [0001] The invention relates to a solid waste gelling material based on sulfate excitation. Background technique [0002] With the development of filling mining technology, especially the gelling filling mining technology, many complex technical problems in mines have been solved well, and it has been widely used in non-ferrous metal mines and precious metal mines. The filling cost of non-ferrous metal mines accounts for 1 / 3 of the mining cost, and the cost of filling materials exceeds 80% of the filling cost. In order to reduce filling costs and improve economic benefits, it is necessary for enterprises to use new cementitious materials with low price and superior performance. [0003] The solid waste cementitious materials added with silicate that are widely used at present have certain deficiencies. First, the coagulation time of filling slurry using silicate cementitious materials is too long to meet the actual production needs of mines; second, the hyd...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/153C04B28/14
CPCC04B7/153C04B28/14C04B28/142C04B28/144C04B2201/50C04B18/141C04B14/28C04B2103/302C04B22/147Y02P40/10
Inventor 陈锡麟李鹏冯波宇潘敏尧陈忠平张善硕梁浩坚伍冠东吴伟丰邓汉楚
Owner 广东同创科鑫环保有限公司
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