The industrial steelmaking test of Chromium ore directly reduced and alloyed to make 35CrMo steel in the three-ton arc furnace has been finished,which used global reduced Chromium alloy produced by Chromium ore powders and coke powders in the Inner Mongolia region.

Temperature-rising characteristic of chromite ore fines containing coal in a microwave field;

To fully utilize chrome ore fines,literature pertaining to experimental studies on plasma of chrome ore fines is reviewed.

A series of important factores which affect temperature-rising characteristic of carbon-containing chromite fines in microwave field are analysed in the paper.

Temperature rise characteristic of carbon-containing chromite fines during the process of reaction in microwave field is analyzed.

Microwave heating method was used to reduce coal-containing chromite fines, scarce chromite resources can be fully used, technical process of ferrochrome smelting is simplified.

Temperature distribution of coal-containing chromite fines in cyclindrical crucible is analyzed by experimental and numerical methods during microwave heating.

Problems of Oxygen Measurement in Chrome Powder by Pulse Infrared Spectrometry;

The tanning properties of QUIMITAN ABC have been compared with chrome powder and chrome containing sytan by pretanning and retanning.