Of depleted of chromium ore beneficiation, has used jigger, shaker, spiral concentrator, centrifugal concentrator and belt sorting through the chute around the depleted chromium ore _{(Cr 2 O 3 <20%} ), but also water power sorting The pipe was selected to pass the shaker in the mine. Dry strong magnetic separation, wet strong magnetic separation, flotation and various chemical beneficiation methods were studied in the laboratory. However, in the actual production, the re-election method is mainly adopted, and individual mines adopt strong magnetic separation.
Since 1967, China has built five small ore dressing plants in Zunhua, Beijing, Miyun, Shangnan, Inner Mongolia, Sauran, Inner Mongolia, and Salto, Xinjiang. The first three have been selected with the end of mining. Discontinued. The existing Solon Mountain plant was built in 1985. The designed scale has an annual output of 3,000-4,000 tons of concentrate powder, 25% of the ore grade, 40% of the refined grade after re-election, but the tailings grade is 10%. In 1986, it was put into production for the strong magnetic separation process.
1 and FIG. 2 is a chromium ore Avenue Bhattacharjee Gansu Jig - Inner Mongolia and tin ore flowchart AU test magnetic sorting shaker 3 flowchart. [next]

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FMFQ(S)double mill is widely used for wheat flour milling,as  well as corn,broomcorn,brewage,feedstuff milling in large and medium-sized flour factories.