A few days ago, the author learned from the Shanxi Inspection and Quarantine Bureau that there have been 1,001 large-scale mining tires that have passed the inspection and inspection by the Bureau since this year, with a value of $35.235 million, an increase of 24.97% and 63.76% year-on-year respectively, both of which have reached historical highs.

Giant tires are important parts for open pit mines. They are mainly used on large-sized trucks and large-scale excavation machinery equipment, accounting for 20% to 30% of the total cost of mine transportation. It is understood that these giant mining tires are mainly imported from China Coal Pingyi Group Co., Ltd. The company is part of the China Coal Group and is a coal mining company with open pit mining. The mining area is located at the junction of Pinglu District and Lucheng District of Shengzhou City. At present, the company has three large-scale open-pit coal mines, three large-scale modern wells, six supporting coal washing plants, and three special railway lines. The degree of modernization is relatively high, and the production scale is among the highest in the country. The annual output of raw coal is stabilized at 100 million tons. the above.

In November last year, China Coal Pingyi Group Co., Ltd. East Open Coal Mine was completed and put into production. A large number of giant mine excavation equipment and mine transportation vehicles were added. The consumption of tires increased significantly. Therefore, the company has successively imported a large number of giant tires from Japan, the United States, Spain and Belarus. The Shanxi Bureau took measures to follow inspections and rapid inspections to enable the import of giant mining tires to be put into use in a timely manner to ensure the smooth operation of coal mining operations.

Combined Flow Closed Cooling Tower

Closed Cooling Tower is operated by circulating water or fluid, which is divided into two closed loops.

1. Circulation in the tower: the circulating water or fluid passes through the hot zone environment. After the water temperature rises, it enters the surface cooler in the tower, and the heat is sent to the environment outside the tower through the surface cooler and ventilation fan. The cooled circulating water or fluid is sent to the heat source by the water pump.

2. Circulation outside the tower: the spray water is sent to the spray system by the water tank through the water pipe. After spraying, the spray water first exchanges heat with the filler, so that the spray water can be cooled rapidly. At this time, the water contacts the surface of the surface cooler for heat exchange. Part of the hot steam is discharged through the ventilation fan, and the cooled spray water drops to the water tank for secondary circulation to form an external circulation for cooling.

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