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Method for producing rock wool by utilizing coal gangue

A technology of coal gangue and rock wool, which is applied in the field of continuous fiber material production, can solve problems such as difficulty in continuous production and high energy consumption, and achieve the effects of improved homogenization, low operating costs, and environmental protection in the production process

Inactive Publication Date: 2020-12-04
山西华康绿色建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problems of high energy consumption and difficulty in continuous production in rock wool production

Method used

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  • Method for producing rock wool by utilizing coal gangue
  • Method for producing rock wool by utilizing coal gangue

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for producing rock wool from coal gangue, comprising the following steps:

[0028] a) Weigh 60kg of coal gangue, 20kg of slag, 10kg of diatomite and 10kg of kaolin;

[0029] b) Calcining and melting the above raw materials into magma in the melting tank kiln;

[0030] c) spinning the magma through high-speed centrifugation, and spraying binder and water repellent at the same time to obtain fibers;

[0031] d) The fibers are collected, spread, pressed, solidified and cut into rock wool materials in sequence;

[0032] Such as figure 1 with 2 As shown, the melting tank kiln includes a calcining section and a melting pool. The calcining section includes a calcining front section 1 and a calcining post section 2. The molten pool is arranged at the tail of the calcining post section 2, and the outlet of the calcining front section 1 is higher than the calcining post section 2. The feed port of the post-calcination section 2 is higher than the feed port of the mol...

Embodiment 2

[0035] A method for producing rock wool from coal gangue, the specific steps are the same as in Example 1, the difference is that the formula of the raw materials has been adjusted: specifically, 50kg of coal gangue, 20kg of slag, 15kg of diatomite and 15kg of Kaolin; the same structure used in the melting tank kiln.

Embodiment 3

[0037] A method for producing rock wool from coal gangue, the specific steps are the same as in Example 1, the difference is that the formula of the raw materials has been adjusted: specifically, 72kg of coal gangue, 15kg of slag, 8kg of diatomaceous earth and 5kg of Kaolin; the same structure used in the melting tank kiln.

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Abstract

The invention relates to a method for producing rock wool by utilizing coal gangue, and belongs to the technical field of continuous fiber material production. The problems that in rock wool production, energy consumption is large, and continuous production cannot be achieved easily are solved. The method comprises the specific steps that 50-75 parts of coal gangue, 10-20 parts of slag, 8-15 partsof diatomite and 5-15 parts of kaolin are weighed by weight; the raw materials are calcined in a melting tank furnace and molten into magma; then centrifugal thread throwing is carried out, and a binder is sprayed to prepare fibers; and the melting tank furnace comprises a calcining section and a melting tank, the melting tank comprises a melting tank front section and a melting tank rear section, and a partition wall is arranged between the melting tank front section and the melting tank rear section and provided with a discharge hole. According to the method, continuous production of rock wool is realized, the melting tank furnace does not need to be provided with excessive power devices, materials are continuously calcined and molten along a production line by means of the height difference of all sections and combination with a feeding device, the production process is more environment-friendly, and the overall operation cost is low.

Description

technical field [0001] The invention belongs to the technical field of continuous fiber material production, and in particular relates to a method for producing rock wool by using coal gangue. Background technique [0002] At present, most of the natural ores such as basalt, diabase and dolomite are used as the main raw materials to produce rock wool. Because the raw material must be melted at high temperature, and then spin through a high-speed centrifuge to produce rock wool fiber, it consumes a lot of resources and energy. From the perspective of resources and environment, this does not meet the requirements of sustainable development. Secondly, the production raw materials of industries such as rock wool, basalt fiber or glass basically use powder batching, and the batching materials are put into the kiln for melting through the feeding machine. At the same time, the kiln exhaust gas will take away part of the powder, which not only causes waste of production raw mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/4209D04H1/60D04H3/002D04H3/12C03B37/04C03C13/06
CPCD04H1/4209D04H1/60D04H3/002D04H3/12C03C13/06C03B37/04
Inventor 张卫平彭波李永贵张德胜李雪峰
Owner 山西华康绿色建材有限公司
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