Gangue comprehensive utilization method

A technology of coal gangue and kaolinite, which is applied in the field of comprehensive utilization of solid carbon-containing materials, can solve problems such as insufficient utilization of coal gangue and environmental pollution, and achieve the effects of increasing added value, improving utilization efficiency, and making full use of waste resources
CN102719294AInactive Publication Date: 2012-10-10PEKING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
PEKING UNIV
Publication Date
2012-10-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a gangue comprehensive utilization method. The method comprises the steps that: gangue is grinded into particles with a particle size smaller than or equal to 10mm; combustion is carried out in a fluidized bed roaster, and heat generated by combustion is used for civil use or industrial heat supply; additives are added to white inorganic ash after combustion; melting is carried out at a temperature of 1500-2000 DEG C; inorganic fiber is obtained by blowing melted mixtures or carrying out thread throwing upon the melted mixtures. According to the method provided by the invention, a technical route of complete utilization of the gangue is provided, and the technical route has great significance for methods and means of waste utilization development and additional value increasing of the gangue. The gangue comprehensive utilization method belongs to a new technology of the resource, energy cycle and regeneration utilization field; and by using the method, waste utilization efficiency can be improved and waste resources are fully utilized.
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Description

technical field

[0001] The invention relates to the field of comprehensive utilization of solid carbonaceous materials, in particular to a method for comprehensively utilizing coal gangue to burn heat and prepare inorganic fibers. Background technique

[0002] Coal is one of the main energy sources used by the human world since the Industrial Revolution in the 18th century. In my country's primary energy production and consumption structure, coal accounts for as much as 70%. For a long time in the future, the strategic position of coal as the main energy source will not change. During the mining and utilization of coal, waste generation is inevitable.

[0003] Coal gangue is the waste rock associated with coal, and it is a kind of mining solid waste. At present, the amount of coal gangue discharged accounts for about 10% to 25% of the coal mining volume, and it has become the waste with the largest accumulated stockpile and site occupation in my country. According to stat...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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