Production technology and method for preparing lump coal by use of coal dust and river mud

Abstract

The invention brings forward a production technology and a method for preparing lump coal by the use of coal dust and river mud. The scheme comprises the following steps: firstly screening raw coal with less than 6% of water content so as to obtain coal dust with granularity of being less than 3mm, naturally drying, stoving, crushing and sieving river mud dug out from a river to obtain a dry river mud powder with granularity of less than 3mm, putting the coal dust and the dry river mud powder into a drum-type mixer and stirring while adding 12% of water, pouring into a roller with a hopper after uniformly stirring so as to prepare wet lump coal, putting the prepared wet lump coal into a chain-belt drying baker and drying to obtain dry lump coal which can be directly used in a boiler as fire coal for combustion, wherein the addition amount of the dry river mud powder is controlled within 30%. The invention has the following beneficial effects: raw material resources for the production are rich, easily available and inexhaustible; production cost is low; the production technology is simple; and the product produced in the invention can be used for normal combustion in a boiler.

Description

technical field [0001] The invention relates to a coal-burning processing technology. Aiming at the current energy shortage, reducing energy waste, turning waste into treasure, and improving the environment, a production technology and method for making lump coal by using coal powder and river mud are proposed. Background technique [0002] Raw coal will produce a large amount of pulverized coal of different fineness during production and transportation. Pulverized coal can only be used in large boilers with chamber combustion or suspension combustion. Pollution to the surrounding environment to a large extent. River mud is rich in resources, and river mud contains combustible organic substances. A large amount of river mud produced by transporting rivers every year needs to be burned in power plants. Now we have invented a lump coal made of pulverized coal and river mud, which can be used for Used on small and medium-sized boilers, turning waste into treasure, making it an...

AI Technical Summary

Problems solved by technology

[0002] Raw coal will produce a large amount of pulverized coal of different fineness during production and transportation. Pulverized coal can only be used in large boilers with chamber combustion or suspension combustion. Pollution to the surrounding environment

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