1 ore body occurrence conditions A lead-zinc ore deposit type is silver lead and zinc sulfide, a total silver lead-zinc circle 8, wherein the largest ore bodies No. â‘¢, accounting for 94% of the whole amount of silver metal total reserves, silver, lead and The zinc industrial ore body is dist
Read moreDuring the operation of the diesel generator set, the gap size of the valve will affect the diesel engine power. If the valve clearance is too large to cause insufficient inflation and insufficient exhaust, the valve clearance is too small to cause the valve to close tightly and the high-temperatu
Read moreIn July, China’s auto imports amounted to 98,000 vehicles, a year-on-year increase of 3.1%, and the adjustment trend was obvious. Wang Cun said that after two consecutive months of high growth, the growth rate of imported vehicles slowed in July. In the first 7 months, China had a total of
Read moreWhen installing thermocouples, observe the following principles: 1. The measuring end of the thermocouple should be located in a place that can truly represent the temperature of the measured medium, and should not be installed near the furnace door or be too close to the heated object; 2, therm
Read moreIndustrial intelligent temperature control instruments have various problems due to the use of the environment (pollution, interference, vibration, etc.) in the production plant. Below, introduce the intelligent temperature control instrument common faults and troubleshooting methods. First, the
Read moreNew energy vehicles have eliminated the pollution caused by the exhaust of traditional fuel vehicles to the atmosphere, but the environmental pollution caused by the use of batteries after waste has brought new problems to the society. The policy has spared no effort to make various subsidy program
Read moreRolls-Royce has signed a contract to provide ship design and marine equipment for a new fence/trawler of the Norwegian shipping company Gunnar Langva AS. Â Â Â Â Â Rolls-Royce will provide ship design and marine equipment for a new fence/trawler. The new fishing vessel will be 75 me
Read moreAbstract: In this paper, the definition and classification of high temperature valve, commonly used high temperature valve type, design points and material selection to do an introduction. Key words: high-temperature valve; design; material DOI: 10.16640 / j.cnki.37-1222 / t.2017.06.045 In recent
Read moreSliding line is also called safety trolley line, or simply referred to as sliding line. Now that the product line is not uniform, buying a good-quality line can be a lot of work. Now we will teach you how to judge the quality of the line. If you follow these specifications in normal use, you can s
Read more[ China Agricultural Machinery Industry News ] "There is food in the hands, the heart does not panic." From the perspective of national food security, having food is “the bottom of the familyâ€; however, for the new farmers who rely on the scale of land transfer to grow grain,
Read moreOn June 2, local time, Chinese Minister of Transport Li Xiaopeng held talks with the German Federal Minister of Transport and Digital Infrastructure Alexander Dobrint in Berlin. The two sides positively evaluated the existing cooperation in the transportation field of the two countries and agreed t
Read moreRecently, in Luoyang Boma Construction Machinery Co., Ltd., which is located in Luoyang Airport Industrial Cluster District, a driverless tractor that has just rolled off the line slowly enters the parking area. "Luoyang made" driverless tractor (photo taken by Xu Jianjun, Luoyang Daily)
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