Product Notes
- 7805437 reads
The technological process of preparing metal tungsten powder with metallurgical tungsten material includes the following steps: concentrating coarse Na2WO4 solution to crystallize and recovering excessive alkali, dissolving Na2WO4 crystal to obtain solution with WO3 concentration of 180-250 g/l and pH value of 7.5-8.5, adding alkali metal salt and evaporating to crystallize, treating the crystallized product in hydrogen atmosphere at 350-450 deg.c for 2 hr to obtain 'bluish tungsten' or calcining the crystallized product at 600-700 deg.c to obtain 'yellowish tungsten', and final reduction with hydrogen at 750-850 deg.c to obtain metal tungsten.
RX MARINE INTERNATIONAL is most popular chemicals source in INDIA, Keeping ready stock at 5 LOCATION which includes Mumbai, Kandla - Gandhidham, Vizag - Visakhapatnam, Ennore - Chennai, Kolkata more then 3000 types of chemicals. Please click here to get PRODUCT Categories details http://rxmarine.com/Products
Mail Us for any PRODUCT related information and purchase inquiry : mail@rxmarine.com ( This mail is for customer / Buyer only ) And if you wants to add your hand as a supplier, And if you have volume manufacturing capacity of chemicals, pl. drop your mail at rxmarine@gmail.com ( This mail is for supplier only )
