The special pumps in the Botuo Stainless Steel series are high-pressure with an 250 Bar to 1500 Bar 21-400 Litre stainless steel head. They are ideal for use in the food, chemical and pharmaceutical industries. The special pumps in the Botuo Stainless Steel series, stainless steel pressure washer pump, are also used in reverse osmosis systems, a procedure for purifying water used in particular in the food industry because it is able to remove pollutant particles from water without altering the mineral sources that are of particular importance for the body. Stainless steel is used as the main component because it is particularly corrosion resistant, and the inside has oversized tapered roller bearings able to guarantee longer duration. All the pump models produced by Leuco are renowned worldwide for their efficiency and reliability and the high quality of the materials used. botuo pumps also offers an efficient customer service able to provide all kinds of assistance and clarification. Reverse Osmosis Plunger Pump,Desalination Pump,Seawater Plunger Pump Zhejiang Botuolini Machinery Co.,Ltd , https://www.chinaplungerpump.com
Our non-ferrous metals, ferrous metals, chemical, nuclear industry, building materials, mining, extensive mining stope mining method in the open air room conditions pillar of the stay. In 1983, 25 non-ferrous metal mines were surveyed, and 23 of them were returned to the mining column in whole or in part. The advantages are simple process, high recovery strength and efficiency, and low cost. However, it is not suitable for mining when the ore value and grade are high or when it is necessary to protect the surface.
According to the stability of the ore rock, the dip angle of the ore body, and whether the upper empty area is collapsed, the pillars of the open-pit mine can be recovered by the empty field method or the caving method respectively.
In addition to the stability of the ore surrounding rock, the empty field method back to the mining column is generally used for the following situations: (1) horizontal or gently inclined thin to medium-thick ore bodies; (2) small-scale blind ore bodies; (3) steeply inclined ore The surrounding rock is stable at the first or subsequent stage of the body, and the empty area does not collapse naturally during the equivalent period. In the first case, only a part of the pillars are selectively recovered; in the second and third cases, the pillars can be all recovered. To ensure safety, a certain thickness of the ore cushion can be left or other measures can be taken. The empty area after returning to the mining column can be treated by isolation, caving or other methods depending on the specific situation.
Under other conditions, the caving method is used to return to the mining column. At the same time as the pillar collapses, it collapses the surrounding rock or transfers the upper part of the overburden rock, and the ore is discharged under the overburden.