Experimental Study On Development Of Oxidized Pellet Addictives Based On Boron Mud Secondary Resource

Boron mud is the residue in the pyrogenic process producing borax or boric acid with the raw material of szaibelyite or ludwigite in chemical factories. Boron mud as an important secondary resource, and an annual output of boron is about2million tons, at present, its utilization is relatively low, boron mud contains alkaline substances of MgO, CaO, Na2O and K2O, causing serious environmental pollution. In order to achieve a large number of applications of boron mud secondary resource and reduce environmental pollution, develop circular economy, through the preparation of pellet, high temperature metallurgical performance testing and mineral phase analysis under laboratory conditions, it carried out a feasibility study of boron mud as the oxidized pelletd additives and reduced bentonite amount, and optimized boron mud additives.Through this study, the conclusions can be drawn as follows:(1) Within a certain range, Boron mud additives help to improve the crushing strength of pellets, and the appropriate dosage is1.0%;(2) With addition of boron mud additives, the reduction swelling performance of pellet remained stable;(3) With addition of1.0%boron mud additives, it can reduce the bentonite ratio from1.0%to0.3%;(4) It can create economic and social benefits by using boron mud additives, and it has broad application prospects;(5) With addition of0.8%Improved additives, it can reduce the bentonite ratio from1.0%to0.2%, and the high-temperature metallurgical performance is better than the benchmark pellet and boron mud pellets.The results show that boron mud can be the oxide pellet additives and appropriate reduce the bentonite dosage. It is an effective way to apply boron mud to reduce environmental pollution by using boron mud as pellet additives.