To provide you with graphite electrodes.
Graphite electrode,
Purified graphite material is an isotropic ultra-micro-extreme graphite material with an average particle size of only 2μm, so it can achieve a surface finish close to a mirror; it also has excellent cutting performance, excellent wear resistance, and excellent strength. Applicable to surface finish requirements --- and ultra-difficult to process molds; wire cutting electrodes, etc.; such as ultra-fine electrodes, mirror electrodes, and hard alloy workpieces. Graphite is used for processing and manufacturing electric heating elements, structural casting molds, crucible boats for smelting high-purity metals, heaters for single crystal furnaces, graphite for EDM, sintering molds, electron tube anodes, metal coatings, and graphite crucibles for semiconductor technology, Graphite anodes and grids for electron emission tubes, thyratrons, and rectifiers. Isostatic graphite has increased strength at high temperatures, excellent electrical conductivity, and high thermal shock resistance. - -Chemical. Self-nature, --- processing. Large mold EDM graphite, use: suitable for larger rough machining surfaces. For example metal molds for forging, etc. Molded graphite has increased strength at high temperatures, excellent electrical conductivity, and strong thermal shock resistance. - -Chemical. Self-nature, --- processing. Suitable for rough machining of plastic molds, and finishing of forged metal molds. Isostatic graphite has increased strength at high temperatures, excellent electrical conductivity, and high thermal shock resistance. - -Chemical. Self-nature, --- processing. Graphite properties: strength increases at high temperatures. Graphite grades suitable for precision machining are suitable for applications where low consumption, high efficiency, and a highly finished surface are required at the same time. Isostatic graphite has increased strength at high temperatures, excellent electrical conductivity, and high thermal shock resistance.
- -Chemical. Self-nature, --- processing. Graphite properties: Strength increases at high temperatures. Graphite products are graphite grades suitable for precision machining: high density, wear resistance, and strong conductivity. Suitable for use where low consumption and processing speed are required at the same time. Imported isostatic graphite has increased high-temperature strength, excellent electrical conductivity, and high thermal shock resistance. - -Chemical. Self-nature, --- processing. Graphite properties: Strength increases at high temperatures. Graphite products are graphite grades suitable for precision machining: high density, wear resistance, and strong conductivity. Suitable for precision machining of graphite. Imported graphite has increased strength at high temperatures, excellent electrical conductivity, and high thermal shock resistance. - -Chemical. Self-nature, --- processing. Graphite properties: Strength increases at high temperatures. Graphite products are graphite grades suitable for precision machining: high density, wear resistance, and strong conductivity. It is suitable for ultra-precision machining that requires high precision, low blade consumption and micro-machining characteristics. Imported graphite is used for ultra-precision EDM. Imported graphite has increased strength at high temperature, excellent electrical conductivity, and high thermal shock resistance. - -Chemical. Natural, high density, wear-resistant, strong electrical conductivity, excellent processability. Detailed use: heating element, cast iron, cz heater, Siemens application heater, and other components. Graphite purification: accounting for two types of chemical purification and physical purification. (1) Chemical purification is to use the characteristics of graphite acid resistance, alkali resistance, and corrosion resistance to treat graphite concentrate with acid and alkali to dissolve impurities and then wash them away to improve the grade of the concentrate. Chemical purification can obtain high-carbon graphite with a grade of 99%.
There are many types of chemical purification, and the high-temperature smelting method is widely used in China. The basic principle is to react the impurities in graphite (mainly silicate minerals) with caustic soda, that is, caustic soda, at a high temperature above 500°C to generate water-soluble reactants, and then leaching the reactants with water to remove part of the impurities and the other part, such as iron oxide, after alkali fusion, it is neutralized with HCl to form ferric chloride, which is easily soluble in water, which can be removed by washing with water. The concentration of NaOH in the above process is about 50%, and it is mixed with graphite at a ratio of 1:0.8, that is, the production of 1 ton of high-carbon graphite consumes about 0.4 tons. The amount of HCl added is about 30% of that of graphite. Fuel coal is about o.6-o.7t. The equipment used in the alkali fusion method mainly includes anchor mixers, melting furnaces, propeller mixers, and V-shaped washing tanks. The recovery rate is 85-90%, and the investment is 150,000-200,000 yuan. Although this method is relatively advanced, it also has disadvantages such as large water consumption, large loss of graphite, low productivity, large alkali consumption, and pollution of discharged waste liquid. For the above reasons, the cost is higher. To solve the above problems, the Rock and Mineral Center of the Henan Provincial Department of Geology and Mineral Resources has developed a new high-carbon graphite purification process, using centrifugal washing instead of a V-shaped washing tank, and the treated waste liquid is recycled. The new process can reduce material costs by about 50%, save water by about 50%, yield about 10%, and avoid waste liquid pollution. The fixed carbon content of graphite is greater than 99%, and the recovery rate reaches 92.8%. (2) Physical purification is high-temperature purification. Utilizing the high-temperature resistance of graphite, place it in an electric furnace and heat it to 2500°C in isolation from the air, to volatilize the ash (ie impurities) and improve the grade of the concentrate. High-temperature purification can obtain high-purity graphite with a grade of 99.9%. provide information
Provide distribution map of graphite resources in Jiangxi Province: Xiashan, Heyuan, Jinxi County, Letian, Egong District, Dingnan County, Fujian Province: Gaoshan, Zhangping County, Linggenqiang, Jianyang County, Futian, Huaan County, Hunan Province Hong: Chenzhou Lutang, Lengshuijiang Sanjian Township, Anren, Guiyang, Yizhang Guangdong Province: Ledong County, Meilao Town, Ewenling, Lianping County, Meidong, Wuchuan County An County Sichuan Province: Pinghe Township, Nanjiang County, Zhongba Township, Renhe District, Panzhihua City, Yunnan Province, Wangcang County, Xiangyangpo, Pinghe Township, Nanjiang County, Pinghe Township, Renhe District, Panzhihua City, Yunnan Province Zhuhe: Ailao Mountain, Wuyang County Villages, Yuanmou County Autonomous Region: Qinggu Village, Ba Township, Shalong District, Zuogong County, Shaanxi Province: Yingtou Township, Mei County, Chongyanggou, Lishan, Hongqing Township, Lintong County, Laoyindonggou, Huxian County, Qianshan District, Chang'an County, Dan District, Shang County, Feng County, Liuba County, Long County, Mizhi Tongguan Henan Province: Dujiaying in Lingbao County, Duluozhuang in Neixiang County, Jichang Township in Neixiang County, Zhechuan, Xixia, Zhenping, Zengshan, Luanchuan, Heyu Township, Xushan District, Ping, Liaoning Province: Xiaoarshan, Haicheng County, Hongshilazi, Fengcheng, Kuandian County, Huanren County, Jiangsu Province: Xinyi District, Xinjiang: Sujiquan, There are more than 20 mines in Qitai County, Kuxi, Muqi and Xiahe in the Butalaha River area, Xishankou in Yuli County, Jiangjunmiao area, and Qitai County. Zhejiang Province: Qingtian District Qinghai Province: Nuomu Hong District Haixi Prefecture Dulan Jinshuijiang Gansu Province: Subei District Anhui Province: Xuancheng Shuangqiao District, Shexian County, Qianshan County, Hongzhen District, Yancheng Tongcheng County According to preliminary statistics, there are nearly 100 mines in 25 provinces, municipalities, and autonomous regions.
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