Low-cost early strength cementing material ratio decision-making method

Abstract

The invention discloses a low-cost early strength cementing material ratio decision-making method. The method includes: establishing a composite activator ratio decision-making model, and solving the composite activator ratio decision-making model to obtain a composite activator ratio; then, establishing an early strength grinding aid ratio and adding amount decision-making model to obtain a ratio and adding amount of an early strength grinding aid; according to the composite activator ratio and the ratio and adding amount of the early strength grinding aid, carrying out strength test of cement backfill of early strength cementing materials different in specific surface area and corresponding fineness, establishing a relation curve between cement backfill strength and specific surface areas of the cementing materials, and determining the specific surface areas of the cementing materials and corresponding fineness. The ratio decision-making method has advantages that by adoption of smelting waste for development of the cementing materials, early strength of cement backfill can be guaranteed, recyclability of solid wastes in filling mining is improved, mining cost is reduced, and mining economic benefits are increased.

Description

Technical field: [0001] The invention belongs to the technical field of filling and mining, and in particular relates to a low-cost early-strength cementitious material ratio decision-making method. Background technique [0002] Filling mining can backfill waste residues, waste rocks, tailings, waste water and other wastes into the underground stope, effectively control the pressure of the stope and avoid surface subsidence; at the same time, it also reduces waste discharge, and realizes green development and resources without waste or less waste Comprehensive utilization, so as to protect the environment and prevent geological disasters. Compared with other mining methods, the backfill mining method has complex mining technology, low mining production capacity, and poor economic benefits. Usually used for non-ferrous or precious metal ore mining. As our country faces more and more complex and difficult-to-mining ore bodies and environmental protection is becoming increasi...

AI Technical Summary

Problems solved by technology

At present, filling mining mainly uses cement as the cementitious material, and rod sand or tailings as the filling aggregate, so the cost of filling mining is high and the economic benefit is poor.

At the same time, mining, dressing and smelting projects discharge a large amount of waste rocks, tailings, and waste residues; not only pollute the environment, but also cause secondary waste of resources

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