Rock wool product and method for preparing mineral wool by tempering silica sand and albite

Abstract

The invention provides a rock wool product and a method for preparing mineral wool by tempering silica sand and albite. The rock wool product is prepared from the following components in parts by mass: 35-50 parts of SiO2, 10-17 parts of Al2O3, 18-27 parts of CaO, 1-5 parts of MgO, 4-14 parts of MnO, 1-2 parts of TFe, 1-3 parts of K2O and 0-2 parts of Na2O. According to the method for preparing the mineral wool by tempering the silica sand and the albite, in the slag melting process, the added tempering agent is the silica sand and the albite which are uniformly mixed in advance; silica sand and albite are adopted as tempering materials, the tempering effect on the product is obvious, the rock and mineral wool board is prepared through adoption of a sensible heat new one-step method, and the slag ball content, the fiber diameter, the tensile strength, the mine pressure strength and the acidity coefficient all meet the technical requirements of a rock/mineral wool product GB/T25975-2010rock wool board for building outer wall heat preservation.

Description

Technical field [0001] The invention relates to the technical field of mineral rock wool preparation, in particular to a rock mineral wool product and a method for preparing mineral rock wool by tempering silica sand and albite. Background technique [0002] As an important auxiliary material for steel production, silico-manganese alloy occupies an important position in the industrial structure. The total output in 2017 was 6.6069 million tons. Silicon-manganese alloy slag is the main by-product of alloy production. It has a large annual output. Each ton of alloy produced usually produces 1.2-1.3 tons of hot molten slag, and it also faces difficulties in handling. At present, the main way for the disposal of most of the silico-manganese alloy slag in my country is water quenching. A lot of water resources are wasted in the process. At the same time, the sensible heat of the silico-manganese alloy slag is not fully utilized, and most of the water quenching slag after disposal is s...

AI Technical Summary

Problems solved by technology

At present, the main way to dispose of most silicon-manganese alloy slags in my country is water quenching, which wastes a lot of water resources. At the same time, the sensible heat of silicon-manganese alloy slags has not been fully utilized, and most of the treated water-quenched slags are piled up or Landfill, very low utilization rate

On January 1, 2018, the "Environmental Protection Tax Law of the People's Republic of China" came into effect, increasing the taxation of industrial solid waste stockpiled, and paying 25 yuan for the storage, disposal and resource utilization of metallurgical slag that does not meet the regulations The environmental protection tax per ton will bring new burdens to enterprises

[0004] In the existing production of mineral wool and rock wool, most of the tempering materials used are fly ash. During the production process of this tempering material, there is a large amount of polluted flue gas, which is not conducive to environmental protection and comprehensive utilization of resources.

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