English to Japanese Tech/Engineering Mining & Minerals / Gems 砂金採掘

Two-stage crushing of ore, control screening in the class of 10 mm.
Two-stage grinding in a rod mill in the first stage and a ball mill in the second stage.
One stage of classification is hydrocyclone after the second mill.
Enrichment is proposed two-stage in a jigging machine and centrifugal concentrators and a control third enrichment of the tails of gravity on a centrifugal concentrator.
Finishing and cleaning of the gravy concentrate on the tables, obtaining a golden head and industrial product.
https://smartgold.so/docs/productioneng.pdf