Smelting deparment

Casting of dore bullion (gold and silver alloys) ingots

Extracting gold and silver from ores. Selling ingots to the Takehara Smelter. Selling ore powder to domestic copper smelters.

At the only Whole-sliming cyanidation smelter in Japan, we extract gold and silver from gold ores through energy-efficient, fully mechanized Processes.
First, a crusher breaks gold ore into pieces, a conical mill grinds it until it is slimy, then a Processing liquid is added to dissolve andextract gold and silver.
The extract is filtered by a sand filter tank to become a cleaned liguid. Gold and silver contained in the liguid are collected by a displacement reaction process as gold-and silver-bearing slimes.
The collected slimes are turned into dore bullion (gold and silver alloys) in a refining process to become recognizable metals for the first time.


1. Ores

Conical mill

2. Conical mill

Tube mill

3. Tube mill


4. Agitator

Filter press

5. Filter press

Larox filter

6.Larox filter

Crushing and drying kiln

7. Crushing and drying kiln


8. Thickener

Pregnant solution tank

9. Pregnant solution tank

Gold and silver Slime

10. Gold and silver Slime

Heavy oil burner

11. Heavy oil burner

Dore bullion (gold and silver alloys)

12. Dore bullion (gold and silver alloys)

Processing flow