Mining (2)

  ( three ) open Pick work art

      Open pit mines and more small-scale hand mining pick or picks, transport face, due to the tramways help short, can be manually loading, stripping still with drilling and blasting carried out with the narrow-gauge railway, Suzhou, China original kaolin company owned Yang The shallow mining in the East and Yangxi mining areas has been used. Large-scale mine ore is directly excavated by excavators, such as the WK - 2 excavator used in Fujian Longyan Mine and the WY - 32 electro-hydraulic excavator in Zhanjiang Mountain Mine . After digging into the dump truck to the beneficiation plant, such as Fujian Longyan mining dump truck 17t, 10t Zhanjiang mountain Dai mining dump truck. Rock blasting method for hard rock stripping, such as Fujian Longyan Mining CLQ - 80A The type of crawler type DTH drilling rig is rock drilling, and the ammonium nitrate explosive is blasted, and then the dump truck is loaded with a dump truck and transported to the dumping site. Peeling of the topsoil, excavator backhoe excavation and loading are also useful for bulldozers to collect the pile first, and then use the excavator to load the car.

      Sandy kaolin can be used in water and water transportation, such as Guangdong Maoming Kaolin Company and Guangdong Maoming South Kaolin Company. The water resources are rich and the water is abundant. Water delivery. The ore is washed by a water gun, and the slurry passes through the rushing ditch to the collecting tank. The slurry pool is arranged in the middle of the nugget, one for each nugget. The slurry pump for slurry conveyance passes through the diameter 250mm The plastic pipe is transported to the roughing plant. Water gun technical performance see table 1 . The water recovery and transportation of kaolin mines is also used in the UK. Its main advantages are: simple mining process, simple equipment and high labor productivity. The pulping process of the concentrator is carried out in advance, and the selection and integration are integrated. The peeling of the upper cover is dry stripping.

 

       Underground mining mines such as the various mines affiliated to Suzhou China Kaolin Company and the Qingshan Baimu Mine in Wu County, according to the characteristics of soft and thick ore bodies, have been using stratified caving for many years, each layer from the roof to the floor, from the mining boundary or mine The block boundary is arranged back to the mining ore patio and the mining area is controlled at 800 to 1 000 m ² , and the mining time per layer is 3 to 4 months, which can reduce the maintenance of the roadway. After the stratified mining, considering the formation of the regenerated roof, it is necessary to stop for 1 to 2 months and then mine the next layer. 1 . When mining, there is no need for blasting method, but with wind and handcuffs. Foreign countries can use the scraper to pick up the automatic machine along the way to carry out the mining. The marble of the kaolinite base contains pure nitrogen, which will be ejected from the crack during tunneling. Therefore, the problem of diluting nitrogen should be considered in the calculation of air volume. Precautionary measures should be taken to quickly determine the air content of the working surface and set up an automatic alarm device. Choose a good mixed ventilation method. Regarding the problem of caving, it is also more specific than the mine that generally uses the stratified caving method. Generally, mines with stratified caving method are used to form pits on the surface, accumulating rainwater and surface water, and the working face is water-spraying. The surface of the kaolin mine also forms pits and accumulates water, but the regeneration of residual minerals left after mining is topped. Water expansion can function as a water barrier, and there is very little water in the working face. However, sometimes the ore release makes the regenerative roof loose, and the uneven sinking will cause the upper accumulated water to rush out of the mud. This kind of accident has occurred frequently. Therefore, the kaolin mine must take comprehensive waterproof measures against the collapse of the surface and pay attention to the problem of caving and caving.

 

Agricultural Gearbox

Agricultural Gearbox,Bevel Gearbox Reducer,Hydraulic Planetary Gearbox,Earth Auger Drive Motor Shaft

Ningbo CCMS Industrial Co. Ltd , https://www.ccmcmachiningparts.com