When the thickness of the lining plate is worn by two-thirds, no wear and tear, or the discharge port is enlarged to be unable to adjust, the lining plate needs to be replaced, and different replacement ranges can be determined according to the wear and rupture conditions: 1. The rack and the broke-----
Coal mine knowledge training materials - to open up part of Ida The first section of minefield and minefield subdivision First, the coal field is divided into minefield In the process of geological history development, a substantially continuous large-area coal-bearing zone formed by the depositi-----
Description of road transport, railway transport advantages and disadvantages. A: 1. Road transport Advantages: a. Compared with railway transportation, it has higher flexibility. b. Conducive to the use of mobile pit line development, staged or sub-division mining, steep operation, is conducive t-----
What are the ways to increase the efficiency of open-end quantitative packaging machines? The automatic particle packing machine automatically completes all work such as metering, bag making, filling, sealing, printing batch numbers, cutting off, and counting; it automatically completes the packa-----
Gold flotation beneficiation technique, the content of gold in the ore is very low, in order to extract gold ore crushing and grinding necessary and the use of pre-enrichment, or beneficiation method of separating gold from ore manipulation. The most used in gold beneficiation is re-election and flo-----
Blast furnace spraying coal branch status for each outlet to achieve stable blast furnace coal injection and a large number of long PCI balanced to ensure blast furnace along the line of great significance. At present, the temperature difference method is mainly adopted at home and abroad, that is,-----
Dangerous source identification 1. Hazard source: The surrounding environment has not been checked. Description of risk and its consequences: loose coal, coal wall umbrella canopies, live dangerous rock partings injured. Pre-control measures: The top support is safe and reliable within 5m of the -----