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Method for producing rock wool from high-sulfur coal gangue tailings

A technology for high-sulfur coal gangue and coal gangue particles, which is applied to glass manufacturing equipment, manufacturing tools and other directions, can solve the problems of low utilization rate and secondary pollution of high-sulfur coal gangue and steel slag, and achieves the promotion of resource utilization and processing technology. simple effect

Inactive Publication Date: 2017-08-22
绵阳耀邦环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the utilization rate of existing high-sulfur coal gangue and steel slag is low, and it is easy to cause secondary pollution. The resource utilization of steel slag and the simple treatment process greatly increase the value-added space of high-sulfur coal gangue and steel slag while reducing environmental pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] First prepare the kaolinite tailings in the sorting of high-sulfur coal gangue:

[0030] Step (1), ore grinding: the high-sulfur coal gangue is pulverized by a pulverizer first, and the gangue particles are obtained by grinding with a ball mill, and the particle diameter of the coal gangue particles is 200 mesh;

[0031] Step (2), mixing slurry: adding water to the gangue particles and preparing slurry in the adjustment tank, the mass concentration of the slurry is 15%, and the slurry is stirred for 15 minutes;

[0032] Step (3), cyclone separation: the ore slurry is separated through a hydrocyclone, the cone angle of the hydrocyclone is 16°, the cone ratio is 0.50, the cyclone separation pressure is 0.16MPa, and the hydrocyclone The separation time is 3 to 5 minutes;

[0033] Step (4), pulp preparation: the upper layer of wood obtained by separating the cyclone separator can be further sorted to obtain coal slime, and the lower layer of material is prepared in the adj...

Embodiment 2

[0036] The invention provides a method for producing rock wool by using high-sulfur coal gangue tailings. The specific steps are:

[0037] Step 1, weighing kaolinite tailings, steel slag, diatomite and fluorite by weight, and ball milling and mixing the kaolinite tailings, steel slag, diatomite and fluorite to obtain a mixed material, the mixed material The particle size is 50-90mm;

[0038] Step 2, melting the mixed material into magma in a cupola, the melting temperature is 1750°C;

[0039] Step 3, spinning the magma through high-speed centrifugation, and spraying binder and water-repellent at the same time to obtain fibers;

[0040] Step 4, then collect the fibers on the cotton net of the cotton collector, use a pendulum machine to form a multi-layer loose rock wool layer, then compress the loose rock wool layer through a three-dimensional cotton press, and then compress the loose rock wool layer through a three-dimensional pressing machine. The compact rock wool body pre...

Embodiment 3

[0043] The invention provides a method for producing rock wool by using high-sulfur coal gangue tailings. The specific steps are:

[0044] Step 1, weighing kaolinite tailings, steel slag, diatomite and fluorite by weight, and ball milling and mixing the kaolinite tailings, steel slag, diatomite and fluorite to obtain a mixed material, the mixed material The particle size is 50-90mm;

[0045] Step 2, melting the mixed material into magma in a cupola with a melting temperature of 1850°C;

[0046] Step 3, spinning the magma through high-speed centrifugation, and spraying binder and water-repellent at the same time to obtain fibers;

[0047] Step 4, then collect the fibers on the cotton net of the cotton collector, use a pendulum machine to form a multi-layer loose rock wool layer, then compress the loose rock wool layer through a three-dimensional cotton press, and then compress the loose rock wool layer through a three-dimensional pressing machine. The compact rock wool body p...

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Abstract

The invention discloses a method for producing rock wool from high-sulfur coal gangue tailings. The method comprises: step 1 of weighing kaolinite tailings, steel slag, kieselguhr and fluorite according to parts by weight and ball milling and evenly mixing the kaolinite tailings, the steel slag, the kieselguhr and the fluorite to obtain a mixed material; step 2 of melting the mixed material into magma in a cupola furnace; step 3 of thread throwing the magma in high-speed centrifugation and spraying a binder and a water repellent at the same time to obtain fiber; step 4 of sequentially performing cotton collecting, cotton paving, cotton pressing, curing and splitting on the fiber to obtain a rock wool material; the rock wool is prepared from the raw materials in parts by weight: 50 to 60 parts of the kaolinite tailings, 20 to 30 parts of the steel slag, 5 to 10 parts of the kieselguhr and 10 to 15 parts of the fluorite, wherein the kaolinite tailings are high-sulfur coal gangue obtained through hydrocyclone separation and floatation. The method disclosed by the invention improves resource utilization of the high-sulfur coal gangue and the steel slag, further is simple in processing technology, reduces environmental pollution and meanwhile greatly improves added value space of the high-sulfur coal gangue and the steel slag.

Description

technical field [0001] The invention relates to a method for utilizing high-sulfur coal gangue, in particular to a method for producing rock wool by using high-sulfur coal gangue tailings. Background technique [0002] In recent years, the large demand in the market has driven the rapid expansion of the rock wool market. The domestic market demand for rock and mineral wool has been showing a trend of rapid development. The production of rock wool on the market mainly uses basalt and dolomite as raw materials. As the market demand for rock wool increases gradually, a large amount of basalt needs to be consumed, which will cause a large amount of consumption of natural resources. At the same time, waste treatment and resource utilization of high-sulfur coal gangue and steel slag are imminent. High-sulfur coal gangue is black waste rock with low carbon content discharged during coal mining. It is a kind of harmful solid waste. Its discharge and accumulation not only occupy a ...

Claims

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Application Information

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IPC IPC(8): C03C13/06C03B37/005C03B37/14C03B37/16
CPCC03C13/06C03B37/005C03B37/14C03B37/16
Inventor 谢秩勇
Owner 绵阳耀邦环保科技有限公司
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