Management and prevention of broken roof

The broken roof refers to the roof with low strength, joint crack development, poor integrity, low self-stability, and difficult maintenance in the control area of ​​the working surface. The broken roof is prone to leakage and local roofing accidents, which brings many unfavorable fact ...more...

Why is the "315" list of cars and parts?

While the scale of the Chinese auto market has continued to expand, consumer complaints about autos and auto parts have also become one of the hot spots for consumer disputes. According to the analysis of the complaints received by the National Association for Consumers' Association in 2017 re ...more...

Heavy truck companies lack key technologies such as independ…

After several decades of development, heavy truck companies in China have made considerable progress in technology. In particular, the heavy truck market has experienced a period of climax after two years of national stimulus. According to relevant statistics, China’s heavy truck sales volu ...more...

Practice of optimizing concentrated flotation process

Selected coal flotation process plant uses a flotation concentrate. The coal washing circulating water needs to enter a sedimentation tower with a volume of 600m3 for concentration and sedimentation. The overflow water is used for circulating coal washing, and the underflow enters the flotation trea ...more...

Introduce the practical application of composite iron ore be…

Most of the iron ore contains two or more iron minerals, the more species optionally worse. Among these iron ore, symbiotic iron ore, such as hematite, mirror iron ore, goethite, siderite, limonite, etc., are more difficult to select. The conventional beneficiation process can be used to sort the ir ...more...