
In July 2026, the large zinc oxide rotary kiln cylinders manufactured by Hongji were shipped to Jiyuan in successive batches.

What Is Elution in Gold Processing and Where Does It Fit? In a carbon-in-pulp or carbon-in-leach flowsheet, adsorption loads activated carbon with dissolved gold complexes. A gold elution plant sits after carbon recovery and before the gold room: it removes adsorbed gold, sends solution to electrolysis, and prepares lean carbon for reuse. Elution in gold…

A copper refinery plant receives copper that has already passed through concentration and smelting. However, this metal is not yet ready for demanding electrical or manufacturing uses. The refinery carefully prepares anodes. It then transfers copper electrochemically to cathodes. During this stage, the facility manages impurities and carefully checks the finished sheets. This exact sequence…

Smelting can produce copper-rich metal, but the result is not yet clean or consistent enough for demanding electrical uses. A copper electrolysis plant adds the controlled purification stage that smelting cannot provide. Direct current moves copper through an electrolyte and deposits the metal onto cathode sheets while many unwanted constituents stay outside the finished deposit.…

In August 2026, two 1.5×17.5m dryers manufactured by Hongji were shipped to Gansu for use in drying petroleum coke.
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