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Method for fabricating lump coal by using powder coal, and lamp coal obtained by the method

A pulverized coal and coal block technology, applied in the petroleum industry, solid fuel, fuel, etc., can solve problems such as hindering economic development, restricting use, and rising prices, and achieve the effect of ensuring sustainable development and improving utilization

Inactive Publication Date: 2005-10-26
李建新
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] With the rapid development of the economy, the supply and demand of natural coal is becoming increasingly tense, and the price continues to rise, which seriously hinders the development of the economy; and pulverized coal can only be used in some industrial and agricultural fields, resulting in a large backlog of pulverized coal
Moreover, due to the difficulty of pulverized coal transportation, its use is also limited

Method used

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Embodiment Construction

[0016] A method for producing lump coal by using pulverized coal, comprising the following steps: (1) sieving sticky coal powder, removing coal lumps therein, for standby; sieving non-stick coal powder, removing coal lumps therein, for standby; The optimum particle size of the sticky coal powder and non-sticky coal powder is ≤3mm. In order to improve the automation level of the process, the screened sticky coal powder and non-stick coal powder can be placed in their own silos, and the batching can be done through the automatic batching system, and the desulfurizer and combustion aid can be added automatically during the batching process. (2) heating the sticky coal powder in a rotary kiln, the heating temperature is lower than the softening temperature of the sticky coal powder, and exhaust gas and moisture, the optimum heating temperature of the sticky coal powder is 200°C-300°C; heat the non-stick coal powder in the rotary kiln, the heating temperature is higher than the sof...

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Abstract

The present invention discloses a method for producing block coal by using powdered coal. Said method is characterized by that it utilizes the heated binding coal when which is met with high-temperature non-binding coal, it can be quickly softened and formed into lonts of colloids and make the heated binding coal be mixed with the non-binding coal under the action of stirring device, then utilizes forming machine to make them into block coal.

Description

technical field [0001] The invention relates to the technical field of coal deep processing. Background technique [0002] With the rapid development of the economy, the supply and demand of natural coal has become increasingly tense, and the price has continued to rise, which has seriously hindered economic development; and pulverized coal can only be used in some industrial and agricultural fields, resulting in a large backlog of pulverized coal. And because pulverized coal is difficult to transport, it also limits its use. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for producing pulverized coal into high-quality lump coal. [0004] Another technical problem to be solved by the present invention is to provide a lump coal prepared by the above method which is convenient for transportation and use. [0005] To achieve the above object, the technical solution of the present invention is: a method f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/06
Inventor 李建新
Owner 李建新
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