This article tells about the procedures on another synthesis method of lanthanum acetate preparation. Lanthanum acetate is the raw material for preparing the lanthanum tungsten electrode.

The experimental preparation procedure is shown as bellow:

1. Weigh 10g of lanthanum oxide, and then dissolve it in 50% acetic acid solution, whose capacity is 500mL, and heat it with a steam bath. Generally, lanthanum oxide can be completely dissolved, if a small amount of oxide remaining in the bottom of the container, then it needs to be filtered.

2. Place the resulting supernatant on the 75 ℃ water bath, and heat it to remove most of the solvent.

3. Until the solution is cooled and then precipitates crystals, then filter crystals, and then place it in a vacuum dryer, which is equipped with particulate NaON and magnesium perchlorate; dry it by evacuating to get lanthanum acetate hydrate.

 

Tungsten Metals Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten.com.cn
 Tel.: 86 592 5129696; Fax: 86 592 5129797
 Email: sales@chinatungsten.com
 Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
 Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
 Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

Exploration 

The state also put emphasis on tungsten resource exploration. No.908 and 909 geologic exploration teams were established in 1952. There were 6 large tungsten deposits (Xihuashan, Dajishan, Pangushan, Tieshanlong, Piaotang, Huamei’ao), 17 middle deposits and 20 small deposits and other 200 smaller tungsten containing mines in Ganzhou.




Tungsten Powder Manufacturer & Supplier: Chinatungsten Online - www.tungsten-powder.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

This article tells the procedures about one of the synthesis methods of lanthanum acetate preparation, lanthanum acetate, which is the raw material of lanthanum tungsten electrode; its preparing experimental procedure can be seen as follows:

1. Weighing 5g lanthanum oxide, then adding it to a round bottom flask, whose capacity is 500mL and is filled with 200mL acetic anhydride, and then suspension liquid, can be obtained.

2. Heating the flask, what can be seen from the bottom of the container is the deposited product, and then makes it reflux until the reaction is over; the time needed is approximately from 6 to 10h.

3. Removing and placing the product in a vacuum dryer, which containing solid NaOH and anhydrous calcium chloride, and then drying it for two days; after that, putting the product in a vacuum dry gun, drying it , the temperature is controlled at 100 ℃ around.



 

Tungsten Metals Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten.com.cn
 Tel.: 86 592 5129696; Fax: 86 592 5129797
 Email: sales@chinatungsten.com
 Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
 Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
 Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

After the year of 1949, Chinese government put great importance on tungsten mine production in Ganzhou. The non-ferrous metal general administration of heavy industry ministry was set up in 1950, with Jiangxi sub-bureau and southern Jiangxi area administrative office in Ganzhou. Daji Mountain, Guimei Mountain, Pangu Mountain and many other mines became state-operated. In October, 1950, the first automated dressing plant (125T per day) was started to be built in Daji Mountain. In 1953, Daji, Xihua, Guimei mines and Shangyou hydraulic power station were listed in the 156 national projects in the first 5-year plan. In 1954, the government approved the expansion of Daji and Xihua and the design of Guimei, with respective processing ability of 1600T/day, 1785T/day, 1560T/day. In Daji mine, main production line was automated. In the same year in Dayu county, Hong Shui, Dang Ping ...mines were built. Since 1955, all mines started to use wet drill and fan ventilation to improve automation level and protect miners’ health. In May 23, 1975, the national news paper “People’s Daily” and Central Radio reported no silicosis had been found for 20 years.

By the end of 50s, the local government started to operate tungsten mines. Tungsten industry in Ganzhou was combined by local and state-operated mines.

There appeared many advanced collectives and individuals in this period. During the 30 years, 570,000 tons of tungsten concentrate were supplied.


Tungsten Powder Manufacturer & Supplier: Chinatungsten Online - www.tungsten-powder.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn