Small Electric Appliances,Processor Vegetable Chopper,Electric Fryer Small Appliances,Small Home Appliances Yuyao Hongzhou Plastic Technology Co., Ltd. , https://www.hongzhoumould.com
Gold product quality standard
In view of the wide range of industrial uses of gold , most sectors do not use high-purity gold products, and only some industrial sectors require the use of high-purity gold products. With the development of hydrometallurgy or hydrometallurgical treatment of copper , nickel , lead anode mud and various metallurgical by-products in the metallurgical industry, it is often necessary to increase the process in order to obtain high-purity gold products. And repeated purification, which consumes too much manpower and material resources and increases production costs. To this end, the quality standards for gold products currently in the current regulations of the Ministry of Metallurgical Industry (YB116-70) are listed in the table below. Relevant departments should, on the basis of this standard, formulate more reasonable quality standards for gold products based on the actual needs of the quality of finished gold products.
Gold product quality standard table
name
Weigh
generation
number
chemical composition(%)
specification
Gold is not less than
Impurity
The sum of impurities is not greater than
shape
Weight (kg)
High purity gold
99.999
-
0.001
Granular or ingot
Gold No. 1
Au-1
99.99
Ag, Cu, Fe, Pb, Bi, Sb
0.01
ingot
10.89~13.30
Gold No. 2
Au-2
99.95
Ag, Cu, Fe
0.05
ingot
10.89~413.30
Note: (1) The above listed products, if the user has special requirements, the supply and demand sides can agree to solve the problem; (2) the gold content of No. 1 gold and No. 2 gold is obtained by subtracting the sum of impurities by 100%;