When selecting and adding the proper trapping agent, the melting atmosphere is controlled to achieve high trapping efficiency. The base metals iron, copper, lead and their sulphides in the spent Ternary catalyst can trap the dispersed platinum group metal particles…
I. The complete process flow for handling failed catalysts Catalyst sampling: A small sample of catalyst is removed from the reactor or catalyst stack for characterization and evaluation. Catalyst characterization: Physical and chemical characterization of the catalyst, including analysis of…
Platinum, palladium and rhodium are precious metals that are usually found in the form of ores, and to extract these metals from the ores requires several steps of fine processing. The following are the general refining and refining steps. Refining…
In some domestic smelters by cyanide gold sludge obtained from the crude gold, gold content of up to 15-37%, assemble not more than 50%; mercury paste distillation out of the crude gold in 50%-70%; heavy sand refining crude gold gold…
1、Prepare electrolyte: use the gold dissolving equipment in the process of aqua regia method to prepare gold electrolyte, take 99.99% gold powder, add aqua regia, make it fully dissolved, after the dissolution is finished, filter the insoluble residue, the solution…
In China, there are many enterprises such as Huludao Zinc Factory, Yongxing Guiyuan, Hengbang Smelting, Zhaogin Refining, Chifeng Shanjin Silver Lead, Zhejiang Hongda, Yunxi Copper, Xiyu Nonferrous Metals, etc. Through a large number of manufacturers to produce the actual summary…
The project implementation plan can be divided into two categories: One is the construction of a small smelter according to the proposed process flow specifically for the treatment of friendly catalysts; The second is to use the process and equipment…
There are many types of plasma melting furnaces, such as open furnace and closed vacuum furnace. The latter has some characteristics of arc melting and vacuum melting, and they all use DC power supply. There are many types of plasma…
The sub-gold solution can be purified by sodium sulfite reduction, can choose a direct reduction or two step-by-step reduction:. 1, a direct reduction: in the sub-gold solution by adding an excess of sodium sulfite solution, so that the gold is…
Refining gold is not an easy thing, because not only need a lot of equipment, but also need some chemicals, and gold refining is mainly to remove impurities, improve the purity of gold, which equipment will be used? The following…
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