Burning Magnesium & Aluminum to Produce Refractory Grain Material

Bauxite, dolomite, and magnesite are natural occurring minerals that are used extensively in the manufacture of refractory products. In addition, magnesia produced from seawater or brine finds its way into the production of refractories. All of these materials must be processed at high temperatures, 1500°C to 2200°C, to produce an intermediate raw material (refractory grain), … Read more

How to Calculate the Size of Surge Bins

The purpose of a surge bin between two machines is to permit either of the two machines to continue production for at least some of the time while the other machine is interrupted by break down or by preventive maintenance or by other problems up or down the line. This results in a higher capacity … Read more

Leached Uranium Ore Restoration by Aluminum Chloride

In situ leaching has been an attractive means of recovering uranium from small or low grade ore deposits. The process involves injecting a lixiviant, typically ammonium carbonate-bicarbonate and an oxidant into the uranium containing ore body. As the solution passes through the ore body, the uranium is oxidized from the insoluble plus four to the … Read more

Air Pulsated Jigs

An air-pulsated jig has teen widely adopted as a main coal washer. It may be mainly because of its many technical and economic features such as large capacity, low running cost, long life, etc. However, the recent increasing demand of fuel coal requires a higher productivity and efficiency of the air-pulsated jig. To fill this … Read more

Control Acid Mine Drainage

Acid Mine Drainage from underground coal mines and coal refuse piles is one of the most persistent industrial pollution problems in the United States. Pyrite in the coal and overlying strata, when exposed to air and water, oxidizes, producing ferrous ions and sulfuric acid. The ferrous ions are oxidized and produce an hydrated iron oxide … Read more