The use and solution control of surface activators allowed chromating reactions to proceed at a very rapid rate. In addition, when maximum corrosion resistance was required, accelerators such as the ferricyanide ion were used, especially on diffi cult to treat alloys . The importance of having fluoride present in
Chromite embedded in the grain size is generally in the fine particles, so most of the equipment used also includes crusher, rod mill, etc., chromite re election equipment to determine the ...
Chromite Uses Area. The only ore of chromium. Chromium is used with various other metals to give hardness to steel, also as a plating material because of its non corrosive nature. Chromite bricks are used to a considerable extent as linings for metallurgical furnaces, because of their neutral and refractory character.
This paper reviews the major deposits of lower grade chromite in the world and a wide variety of methods used for the recovery of chromium from these deposits. Gangue materials in more coarsely sized ores can be separated by gravity means, whereas flotation techniques are required for finer grained materials.
flotation of collophanite can be achieved by fluoride activation. Experimental results of fluoride adsorption by collophanite suggest that, at low fluoride concentra tion, a fluoroapatite type compound may form on the collophanite surface by chemisorption of fluoride ions at calcium sites. At high fluoride concentration, cal
Deslimed chromite ore was floated at pH 1.5 to 5.5 using a long chain fatty acid collector and soluble fluoride ions as a silicate depressant. The Havens method was later modified slightly to permit flotation without preliminary desliming.