Silicon manganese slag rock/mineral wool product and preparation method thereof

Abstract

The invention relates to a silicon manganese slag rock / mineral wool product and a preparation method thereof. The product is mainly composed of, by mass, 30-50 parts of SiO2, 5-19 parts of Al2O3, 17-25 parts of CaO, 2-8 parts of MgO, 1-15 parts of MnO, 1-5 parts of TFe and 1-6 parts of K2O, wherein corrected acidity coefficient Mk* of the product is 1.2-1.7, and Mk*=Wt%(SiO2+Al2O3) / Wt%(CaO+MgO+MnO+TFe+K2O). A method of taking loess as a conditioning material is provided, the problem of difficulty in successfully preparing high-quality mineral wool after silicon manganese slag is conditioned issolved, the corrected acidity coefficient Mk*is 1.2-1.7, viscosity of silicon manganese hot melt slag after conditioning is 11-7Pa.S, corresponding temperature is 1360-1420 DEG C, long slag attributes are presented, and optimal optimization proportion is realized.

Description

technical field [0001] The invention relates to a silico-manganese slag rock / mineral wool product and a preparation method thereof. Background technique [0002] While the vigorous development of the silicon-manganese alloy industry has brought huge economic benefits to the society, it has also produced a large amount of industrial solid waste. When smelting alloys, 1.2-1.3 tons of hot slag is usually produced for every 1 ton of alloy produced. The hot slag is washed away and cooled by high-pressure water, enters the pool with the water, and then salvaged and loaded to the designated site for stacking. This not only takes up valuable land resources, wastes thermal energy resources, but also affects the surrounding ecological environment and human health. pose a certain potential threat. Silicon-manganese alloy smelting slag is a secondary resource with high utilization value, and it will be a development trend in the future to use ferroalloy slag with high added value. If...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the above problems, proposes a calculation method for correcting the acidity coefficient and provides a method using loess as a conditioning material, which solves the problem that it is difficult to successfully prepare high-quality mineral wool after conditioning silicomanganese slag, and corrects the acidity Coefficient Mk * = 1.5-1.6, when the viscosity of silicomanganese hot slag after quenching and tempering is 11-7Pa·S, the corresponding temperature is 1360-1420°C, the property of slag is long, and the rock (mineral) wool prepared by sensible heat new one-step process Combustion performance meets the technical requirements of flat-shaped building materials and products A (A1) grade non-combustible materials (products) in the standard GB8624-2012, appearance, size and tolerance, dimensional stability, thermal conductivity, average fiber diameter, slag ball content, The mass moisture absorption rate, water repellency rate, short-term water immersion rate, acidity coefficient, compressive strength and tensile strength perpendicular to the surface all meet the technical requirements of rock wool products GB / T25975-2010 rock wool board for building exterior wall insulation. The technical solution is as follows:

Images