First, the factory lightning protection is divided into the overall structure of lightning protection, which is the lightning protection of the main building, the main ground hit the grounding, grounding, forming a grounding network, grounding resistance is less than 10 euro. Then it is connected with the main steel bar or steel body. The concrete-cement roof is connected with lightning strips or lightning rods, grounding test points have to be left on the outer walls of the walls, and galvanized flat irons are used for direct introduction to the roof.
Second, the grounding of the power supply system is divided into the protection grounding and the work point grounding. The protection grounding is the grounding of the live equipment housing. The grounding of the work point refers to the neutral grounding. The grounding wire practice is the same as the lightning protection grounding method, and the grounding resistance is less than 4 ohms. If the requirements are not met, a grounding electrode should be added. If the conditions are not good, the electrolyte should be added and/or the soil replaced. Working ground and protective ground are led out independently in the power distribution room. The system can be one. Working methods, such as separation of ground and neutral wires, can also be combined into a power system (or equipment). The grounding system must be grounded repeatedly. There is also a separate way, TN-C system. Zero land can no longer be combined into one [1].
Third, instrumentation grounding system. The grounding resistance of this system is less than 1 ohm and it cannot be connected to lightning protection grounding.
Fourth, anti-static grounding, such as tubing, etc., every (elbow) 35 meters will have a reliable ground (the system can also be independent), resistance is less than 30 euro.
In addition can undertake lightning protection engineering design and construction, if you need to directly contact Zhengzhou Wanjia Lightning Protection Co., Ltd.
Pyrite Used in Lithium Batteries as Battery Anode Materials
Material for lithium battery cathode
Place of Origin: Henan Luoyang, China
Pyrite, Iron pyrites , pyrites lump, Ferro sulphur, Pyrites powder.
Product Description:
Detailed introduction: it is used as cathode material for lithium battery, which has the advantages of low cost, large capacity, environmental protection and good voltage platform.
The high-grade pyrite is used in lithium batteries as battery anode materials, with benefits of lower cost, large capacity, environmental protection, better voltage platform. Etc.
Quality:
S: 48%min, FE: 42%min, SIO2: 3.0%max, PB: 0.1%max,
ZN: 0.1%max, AS: 0.1%max, . C: 0.3%max, CU: 0.2%max,
H20: 1.0%max, SIZE: 95%min
Granularity: (0-3)mm/(3-8)mm/(3-15)mm/(15-50)mm or other particle size.
Packing: 25KG/500KG/1000KG/BAG or 1000KG/BAG or other packaging.
Note: if there are special requirements, the product can be customized according to clients` requirements.
(In addition, our company is specialized in the production of `Hengkai Metallurgical" Brand - ferro sulphur series for foundry, copper removal agent series for lead smelting, debismuthizing agent for lead smelting, iron sulphide series for resin grinding wheel abrasive industry, iron sulphide series for brake pad friction industry, iron sulphide series for heavy metal wastewater treatment, iron disulphide series for soil improvement, iron disulphide for lithium battery anode, alloy sand series for wear-resisting flooring industry, ferrous sulphide powder series for ferrous sulphide cored wire, ferrous sulphide for ferrous sulphide cored wire, iron sulphide for resin grinding wheel, ferrous sulphide powder for heavy metal wastewater treatment, ferrous sulphide powder for soil improvement, ferrous sulphide cored wire, pyrite, ferrous sulphide ore, molybdenum oxide, high purity molybdenum trioxide, ammonium molybdate, titanium dioxide, cryolite powder, mullite, etc.)
Iron Disulfide For Lithium Iron Sulfide Batteries
Iron sulfide battery Lithium battery iron disulfide Pyrite powder Pyrite powder
LUOYANG PERFECT TRADING CO.LTD, , https://www.pyritefes.com