Fertilizer Mine Baizhuang Coal Mine Research and Development “New Process for Sludge Selection” More than 3 million results

The magical effect of the "automatic sorting" process is that "the amount of coarse slime in our coal preparation plant is large and the ash content is high. In order to guarantee the clean coal index, we have to put the last coal into the coal, which will result in the end of the clean coal. Loss caused a lot of waste.” Recently, Tian Dehui, the director of the coal preparation plant, reported to the mine leader at the monthly technical analysis meeting of the Baizhuang Coal Mine of Shandong Energy Fertilizer Group.

It is understood that, in the past, Baizhuang Coal Mine Washing Co., Ltd. had high coal content in the raw coal washed into the washing machine, the relative yield of coarse slime was high, and the ash was extremely difficult to control, and it was easy to cause serious equipment wear, which affected the economic efficiency of the enterprise.

In response to this technical problem, Baizhuang Coal Mine held a technical analysis meeting and set up a QC research team to sort the coarse slime on the basis of a new process, so as to extract the final clean coal from the last coal and recover the clean coal in the coarse coal slurry. , to increase the production and recovery of clean coal, conducted a focused discussion and research.

"The separation of coal is one of the important means to increase the efficiency of coal utilization and the economic efficiency of enterprises. As a part of coal particle size, coarse coal slime directly affects the efficiency of sorting and recycling." As a technology Tian Dehui, leader of the research team, told the reporter, “Today, the mine has set up a dedicated research team. Our team and technical staff will work together to tackle the problem. I believe this will surely overcome this technical problem!”

To this end, Tian Dehui and team technicians consulted relevant materials and conducted research and discussion several times. After several rounds of summary data and improved sorting processes, they finally found a solution.

The team used the cyclone concentrate and the coarse slime fluidizer to adjust the amount of feed water, the size of the intake air, and the set density. The sorting was automatically carried out, in which the slime with a density lower than the set density was selected. Through high-frequency sieve dehydration into clean coal, the bottom flow of the separator is high-density, high-ash coal slime, which enters the coal through dehydration. Through the separation of coal and clean coal, the concentration of washing water is effectively ensured and the production efficiency is improved.

The technician of the coal preparation plant, Jiang Kun, told the reporter: Using a cyclone coarse coal slurry fluidization sorter to sort the coarse slime to achieve a stable coarse coal ash ratio, increase the coarse slime yield and coal preparation efficiency A number of effects are achieved, and equipment wear is also reduced, and the last clean coal in the coarse slime is extracted to the maximum, avoiding waste of resources.

"Since the adoption of the 'automatic sorting process', the output of clean coal has risen dramatically, with more than 80 tons of clean coal being sorted and more than 2,000 tons of refined coal per month, which has greatly improved the recovery rate of clean coal for enterprises. It is really amazing that the economic benefits generated by the project directly amount to more than 3 million yuan,” said Wei Lianfu, the deputy director of the Baizhuang Coal Mine.

The new slime slime separation process was successful. It was awarded the first prize of Baizhuang Coal Mine scientific and technological innovation and the second prize of QC Technology Innovation of the Fertilizer Group. It was also promoted in various production mines of the Fertilizer Group, laying the foundation for the increase of production and efficiency of the company. .