Coal Crushing Plant

Coal Mine Overview

Coal, a fossil fuel, is the largest source of energy for the generation of electricity worldwide, Coal is extracted from the ground by mining, either underground or in open pits. Coal is primarily used as a solid fuel to produce electricity and heat through combustion. Coal is the workhorse of the nation's electric power industry. The USA consumes about 14% of the world total, using 90% of it for generation of electricity, Coal-fired electric generating plants are the cornerstone of the nation's central power system.

Coal Crushing Production Line

Coal has played an important role in modern industry. The coal is processed and crushed to increase the efficiency and protect environment. In order to use coalmore rationally, efficiently and effectively, the coal need to be processed and crushed into different sizes, 0 ~ 25 mm particle size for coal gas stove , 25 ~ 8 mm for steam locomotive, 25 ~ 6 mm for the industrial furnace, and coal power plant requires grain coal of 0 ~ 25mm.

Coarse Powder mill	MTM Trapezium Mill
High pressure Raymond mill	Ball Mill
Micro powder Grinding mill	MTW Trapezium Mill

The general hardness of coal is 1-4. After coarse crushing by jaw crusher, fine crushing by impact crusher, and sieved by vibrating screen, coal can be processed and crushed into different sizes of the requirements. Cathay jaw crusher, impact crusher for coal crushing have been widely used in the coal industry and mining industry, for its high and unique quality. They can crush coal at large quantity and high efficiency. In addition, Cathay vertical shaft impact crusher can crush coal into much smaller sizes to meet specific requirements.

Jaw Crusher

Large coal enterprises attach much importance to crushers' capacity, quality, maintenance and the cost-effectiveness in the long term. Cathay crawler type mobile crusher minimizes the equipment downtime and integrates the coal conveying and crushing, thus greatly reduces the use cost. It is favored by large coal enterprises, especially coal mine, as it meets their requirements for high capacity and efficiency processing of the coal.

Though coal has many usages such as gasification, liquefaction, ethanol production, the major usage is used as fuel and coke. In order to make full use of coal and reduce the pollution of the environment, after the coal have been mined, people usually crush the larger coal block to small one by coal crushing plant, use coal mill or coal pulverizer to grind the coal.

Utah Coal Plant

Coal Crushing Plant for producing slack coal

Slack Coal

The particle size of slack coal is 0 ~25 mm. The slack coal is often used as combustion agent in steel company, thermal power plant, etc. The consumption of coal is quite large in thermal power plants. Take a 1 million kW thermal power plant for example, coal consumption amounts to 11,000- 13000t a day, which takes 60% ~ 80% of the cost for generating electricity. It is advisable to adopt appropriate coal mill for coal grinding. This can not only improve the utilization of coal, but also contribute to energy saving, environmental protection, economic benefits.

According to the market research, vertical coal mill is used most widely. There are also other grinding mills like traditional Raymond mill, roller mill, trapezium mill, etc. can also meet different requirements for grinding coal into different sizes and types. Customers can choose an appropriate coal according to their specific needs.

Coal Crusher Plant

As coal powder is the most important fuel in the power plant, The plant owners need coal mill or coal pulverize to grind the coal to micro powders. Raw coal (crushed) is fed through hopper at the top of the coal pulverizer and falls down to grinder ring to be pressed, crushed and milled into pieces by rollers. After the first crush, coal powder fall into the second and third layer. The pumping of the high-pressure centrifugal blower put the outside air into the coal mill. The coarse coal powder will be brought into the classifier.

As a pioneer in coal pulverizer, Cathay has positioned itself well to meet the challenge of supplying coal mill with reliably quality and efficiently at the lowest cost. Cathay can manufacture and supply coal mill for all grades from hard coal to coke coal, our ball mill, High pressure Raymond mill, MTW trapezium mill, MTM trapezium mill, Coarse powder mill and micro powder mill is an ideal choice for power plants. The power plant can equipment different kinds coal mill to meet the required size.

Power Plant Coal Crusher Case
Coal mill plays an important role in the coal-fired power plant. The power plant has two types of mills: ball mills and grinding mills.Ball Mills. A ball mill uses steel balls and crush any coal that is in their way.grinding Mills. The other type of coal mills are grinding mill. The coal gradually breaks into powder. The outlet of the mill includes a blower that blows the fine powder up to the boiler furnace.

After the coal has grind to micro powder, it will transported to boilers via a round pipe. The crushed coal is conveyed using primary combustion air into the furnace side of the boiler. The coal powder is feed into the coal mill through a central inlet pipe where gravity is used to lead the coal to the bottom of the coal mill, where the grinding table and heavy rollers of coarse powder pulverizers or micro powder grinding mills pulverizes the coal to particles. The air flow is fed through the mill, with the purpose of heating and lift the coal particles out of the coal mill and into the boiler furnace.(ArticlesBase SC #4982010)