When gold is extracted by cyanidation, there are many methods for recovering gold from a gold-containing solution, such as adsorption, electrolysis, precipitation, and the like. The adsorption method is to adsorb gold in the gold-containing solution onto the adsorbent as the gold-bearing body, and then elute the gold from the carrier, and then precipitate the gold from the eluent by using a sedimentation tank or electrolysis. The commonly used adsorbent It is activated carbon and resin. The electrolysis method directly electrolyzes the gold-containing solution to obtain gold. The precipitation method is to add a precipitant to the precious liquid, and precipitate the gold by a chemical reaction to obtain a gold mud having a high gold content as a raw material for smelting. The most commonly used precipitating agents are the aluminum metal may also be zinc, a special case.
Features
1. It can process a variety of metal and non-metal materials. In particular, marking high hardness, high melting point and brittle materials is more advantageous.
2, belonging to non-contact processing, no damage to the product, no tool wear, good marking quality.
3. The laser beam is thin, the processing material consumption is small, and the processing heat affected zone is small.
4, high processing efficiency, computer control, easy to achieve automation.
Application field
Widely used in integrated circuit chips, computer accessories, industrial bearings, watches, electronic and communications products, aerospace equipment, various automotive parts, home appliances, hardware tools, molds, wire and cable, food packaging, jewelry, tobacco and military matters, etc. Marking of domain graphics and text, as well as high-volume production line operations.
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