Selection And Application of Vanadium Slag Grinding Mill

Vanadium is a silver gray metal with many excellent physical and chemical properties, As a "metal vitamin", vanadium is widely used. It is mainly used in the metallurgical industry. About 85% of vanadium is used to smelt ferrovanadium as alloy additive, mainly in the form of vanadium pentoxide. At present, the raw material for preparing vanadium pentoxide is mainly vanadium slag, and the main equipment for preparing vanadium slag is vanadium slag grinding mill. As the manufacturer of vanadium slag grinding mill, HCM will introduce the vanadium slag grinding mill below.

The process of preparing vanadium pentoxide from vanadium slag includes the following steps: firstly, fine vanadium slag powder is prepared from vanadium slag raw materials through vanadium slag grinding mill; Secondly, fine vanadium slag is batched, and then calcined and leached to obtain calcined leaching solution containing ammonium vanadate; Thirdly, ammonium polyvanadate is prepared from the roasting leaching solution containing ammonium vanadate, and then vanadium pentoxide is prepared by drying and oxidizing ammonium polyvanadate to produce mother liquor of vanadium precipitation; Fourthly, the obtained mother liquor of vanadium precipitation is purified.

The method of preparing fine vanadium slag from raw vanadium slag is to crush and grind the raw vanadium slag, and then conduct magnetic separation to obtain iron slag and vanadium slag after iron separation. Vanadium can be recovered from waste to reduce industrial cost. Vanadium slag has large particle size, high moisture content, and is fragile but difficult to grind. The existing research shows that vanadium slag mainly exists in the form of vanadium bearing spinel phase, silicate phase and metal iron, in addition to a small amount of free quartz. The mineral composition of silicate phase is related to the content of CaO and MgO contained in it. When the content of both is high, partial metasilicate diopside (CaMg (SiO3) 2) will be precipitated; When the content of the two is low, the iron olivine (FeSiO) is the main component; Phosphate quartz is the main form of free quartz, and most of them elongate into human peridotite phase; The metal iron in vanadium slag mostly exists in dispersed state. The mineral particles in vanadium slag are closely combined, and spinel phase and olivine phase are closely associated, so it is usually difficult to achieve mineral separation and enrichment by physical methods. In view of this feature, it is more critical to select appropriate grinding process and equipment. At present, the ball milling process has low efficiency and poor grinding effect, which makes the grinding fineness of vanadium slag insufficient, the grade of vanadium slag obtained is low, and the energy consumption is large, and the operation cost is high. Vanadium slag vertical roller mill is better for vanadium slag grinding mill. Vanadium slag vertical roller mill plays a selective fine grinding role, which has a strong grinding effect for coarse hard minerals, while fine brittle minerals have a weak grinding effect, which has strong grinding pertinence and good grinding products.

HLM vanadium slag vertical roller mill is an ideal vanadium slag grinding mill. With the above equipment, fine vanadium slag with particle size less than 150 μ m can be prepared, which can further recover vanadium and improve the production efficiency of vanadium pentoxide. If you have a purchase demand for vanadium slag grinding mill, please contact mkt@hcmilling.com or call at +86-773-3568321, HCM will tailor for you the most suitable grinding mill program based on your needs, more details please check www.hcmilling.com. Our selection engineer will plan scientific equipment configuration for you and quote for you.