Formula and application method for filling cementing material

Abstract

The invention discloses a formula and application method for a filling cementing material. The formula for the filling cementing material adopts slag and other active materials as raw materials, and main chemical components of the formula comprise SiO2, Al2O3, Fe2O3, CaO, MgO and SO3; the formula comprises the following specific raw materials of: 80.2% of the slag, 15.01% of cement clinker, 3.63%of gypsum, 0.65% of solid sodium silicate and 0.51% of an early strength agent. The formula has the following advantages that the filling strength is high, the mortar strength of the cementing material is high, and after tests are conducted, flexural strength, compressive strength and the like can reach standards of P.O 42.5 ordinary cement; it is shown by actual application results that the cementing material has strong cementation ability for fine-grained tailings, and when the same cement-sand ratio and filling concentration are adopted, the filling strength of the filling cementing material is 40-60% higher than that of ordinary cement.

Description

technical field [0001] The invention relates to the technical field of mine filling materials, in particular to a filling cement formula and a using method thereof. Background technique [0002] With the continuous development of our mining industry and the continuous strengthening of environmental resource protection, more and more mines have adopted the filling mining method, and the cement, as one of the main materials of the filling mining method, occupies an important position. The solidification time and strength of the filling body are important factors affecting the mining cycle, ore loss and dilution rate, and the filling cost directly affects the economic benefits of the ore. At present, the vast majority of ore underground mining filling uses tailings as aggregate and cement as cementing material for underground filling, and there are still many deficiencies. Such as small water-cement ratio, high lime-sand ratio, poor fluidity of the mixture during high-concentr...

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Problems solved by technology

[0008] From the point of view of sustainable development, the rational development of mineral resources should be aimed at the overall human resources, that is, contemporary resources that can be developed and utilized under the existing technological level and economic environment and cannot be exploited under the existing technological level, or even if they can be exploited Utilize, but economically unreasonable prospect resources

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