When gold or silver ingot cast, should be generally appropriate amount of the oxidizing agent and flux. Add saltpeter generally added sodium carbonate or borax plus saltpeter. The addition of sodium carbonate can also release active oxygen to oxidize impurities, so it can not only act as a flux to
Read moreOn June 7, 2012, the reporter from the high-speed interchange of Ningde Liwan high-speed mouth, turn right is the Ningde High-tech Industrial Park. In the park, Ningde New Energy Technology Co., Ltd., five lithium-ion battery manufacturing lines in the production workshop of the first factory buil
Read moreModel NO.: 12-36′′ Color: Black or Dark Blue Procuct Name: Disc Blade
Read moreOEM No.: 1435944 Trademark: LANTECH Transport Package: Neurtral Packing or Designated Packing
Read moreModel NO.: VC100 Trademark: Vfinder Transport Package: Strong Cartoon Box or Plywooden
Read moreAfter the National Day, there are a considerable number of domestic plants that have been shut down for maintenance or to prepare for parking. For instance, Dushanzi Tianli will stop for overhaul on October 7 for a period of one month; Shandong Qixiang will temporarily stop for maintenance on the 7
Read moreAs China has a relatively late understanding of the importance of mechanical parts in the machinery industry, it lacks investment for a long time, resulting in a poor foundation, weak foundation, and weak strength. In particular, with the increase in the level of host computers in China, bottleneck
Read moreThread Diameter: 3.5--6.3mm Length: 13--250mm Certificate: ISO9001:2015
Read moreFirst, free energy data As in the system at 298 K, only S Θ , H 2 S(aq), HS - (aq), S 2 - (aq), SO 4 2 - (aq) and HSO 4 - are thermodynamically stable. The components. The free energy data required to plot the system is listed in the table below. Table 1 Free energy of each substance in S-H 2
Read moreI. Introduction With the development of China's industry and the increase of population, environmental pollution has gradually intensified, especially the pollution of water sources, posing a great threat to the health of urban residents. Studies have shown that most of the organic matter cont
Read moreThe high gradient magnetic separator can generate a large magnetic field force when the background field strength is not too high, and the recovery of materials smaller than 20 μm is better. High-gradient magnetic separators are available in periodic and continuous types. The periodic type is ma
Read moreA large mine tungsten containing about 0.44% WO 3, scheelite and wolframite 6.5:3.5 ratio, using the first flotation recovery scheelite, wolframite its flotation tailings. Due to the low tungsten grade of the white tungsten flotation tailings, the direct flotation of the wolframite is not satisfact
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