JZM Multi-stage Dry Separator

JZM Multi-stage Dry Separator is a new type of dry coal separation technology specially researched and developed by Tangshan Shenzhou Manufacturing Group Joint Coal Dry Process Engineering Technology Research Center on the basis of ZM mineral high-efficiency separator, aiming at the demand of high reject content raw coal reject discharge. This technology was successfully introduced to the market at the beginning of 2022. First, it was applied in the feld of coking coal pre discharge, which ensured the separation accuracy while ensuring a large amount of reject discharge. Compared with the traditional dry separation technology, it has made a qualitative leap in the reject with coal index. The reject with coal index is less than 1%, and even exceeds the separation index of some water washing equipment. It is also applicable to engineering coal, dirty and miscellaneous coal, coal in water washing, reject separation and other felds.

Improve separating accuracy

The innovative application of a new type of stepped separation bed accelerates the separation of light and heavy materials, prolongs the separation time of low-density materials, and improves the separation accuracy.

Increase reject discharge

Shorten the length of reject discharge section, reduce the retention time of the material group, improve the speed of reject discharge, thus increasing the amount of reject discharge.

Better environmental protection effect

The design of using all bag flter is adopted to reduce the fltering wind speed, increase the fltering area, improve the dust removal effciency, and make the dust reach the ultra-low emission standard.

More reasonable mechanical structure

By studying the dynamics of the large separation bed and the stress distribution on the bed surface, the uniform and stable vibration of the variable load bed is realized, and the reliability of the separator is improved.

JZM Multi-stage Dry Separator is a dry separation equipment suitable for coking coal pretreatment, which is developed to meet the requirements of the coking coal separation market with high ash and easy sliming. JZM Multi-stage Dry Separator can be implanted into the dense medium separation system as the frst stage reject discharge separation of coking coal, and more than 80% of the reject in the>6mm particle size can be removed in advance, reducing the amount of feed into the wet coal preparation plant, improving the quality of the coal fed into the water washing system, especially reducing the amount of secondary coal slime and high ash fine mud produced in the subsequent water washing process.

Improve separation accuracy and increase clean coal recovery

The dry separation removes most of the easily slimed reject, reduces the viscosity of the heavy medium suspension, reduces the high ash fne mud entering the fotation system, and improves the heavy medium and fotation effects. The separation quantity effciency of the heavy medium cyclone is ≥ 98%, and the fotation improvement index (comprehensive) is ≥ 50%, which increases the recovery rate of clean coal by 1-2 percentage points.

Reduce investment cost, save energy, reduce consumption and increase effciency

The high ash raw coal is used for dry separation and pre discharge of reject, which can completely or partially replace the heavy medium reject discharge of raw coal, saving more than 10% of the investment. The power consumption per ton of dry separation coal is lower than 2.5kW · h/t, and the combination of dry separation and wet separation simplifes the process fow, saving more than 10% of electricity. Reduce the high ash fne mud entering the water washing system, reduce the water content of fne coal and flter cake, and save more than 20% of water.

Reduce the wear of equipment and pipelines, reduce the consumption of media, water and reagents, and reduce the processing cost per ton of coal by more than 20%.

Shuguang Coal Mine of Shanxi Coking Coal Group Fenxi Mining Group will put the JZM multi-stage Dry Separator dry separation pre discharge system into trial use in 2022. Aiming at the characteristics of large content of raw coal reject and easy sliming of reject in this mine, the dry separation pre discharge of raw coal with water washing system<40mm selected from the coal washing plant will be carried out. The equipment uses raw coal to discharge reject on the spot, effectively reducing the reject entering the water washing process, reducing the production of high ash fne mud, and alleviating the aggregation of high ash fne mud in the fotation feed. At the same time of saving the transportation cost of reject and improving the quality of washed raw coal, the water washing separation effect is greatly improved to reduce the cost, improve the quality and increase the effciency.

	Suntuan Coal Mine of Huaibei Mining Main separation equipment: FGX compound dry coal separator Separating capacity: 1.8Mt/a Separating particle size: 50-6mm Application effect: the ash content of raw coal is 66.7%, and the ash  content after beneficiation is 37.9%.
	Heibaoshan Mining Main separation equipment: FGX compound dry coal separator Separating capacity: 1.2Mt/a Separating particle size: 50-0mm Application effect: calorific value of raw coal is 3700kcal/kg, and that  of cleaned coal after beneficiation is 4500kcal/kg.
	American Eagle River Coal Mine Main separation equipment: FGX compound dry coal separator Separating capacity: 1.2Mt/a Separating particle size: 80-0mm Application effect: the ash content of cleaned coal after beneficiation  is less than 8%, and the sulfur content is less than 4%, which meets  the quality requirements of the power plant, solves the problem of  unsalable coal for the mine, and turns losses into profits.
	Hushuotu Open pit Mine, Mongolia Main separation equipment: FGX compound dry coal separator Separating capacity: 2.4Mt/a Separating particle size: 80-0mm Application effect: the ash content of raw coal is 32.19%, and the ash  content of cleaned coal after beneficiation is 13.3%.