Ni-hard iron is specifically used for mixer paddles, augers and dies, liner plates for ball mills, coal chutes, and wire guides for drawing wires.
Numerous crushing circuits require regrinding of concentrates or average items to amazingly fine sizes to free the nearly related minerals from each other.In these cases, the feed to the ball mill might be from 10 to 100 work or even better.
Applicationball mill is the key mining equipment of material to be crushed, and then to smash.It is widely used in cement, silicate product, new building materials, refractory materials, fertilizer, black and non-ferrous metal ore and glass ceramic production industry, a variety of ores and other grind-able materials can be dry or wet grinding.
6 ft x 10 ft denver ball mill, this ball mill is complete with 200 hp motor, 4,160 volts, faulk gear box.Sold.
Material to be dried enters the dryer, and as the dryer rotates, the material is lifted up by a series of internal fins lining the inner wall of the dryer.When the material gets high enough to roll back off the fins, it falls back down to the bottom of the dryer, passing through the hot gas stream as it falls.This gas stream can either be moving toward the discharge end from the feed end (known as co-current flow), or toward the feed end from the discharge end (known as counter-current flow).The gas stream can be made up of a mixture of air and combustion gases from a burner, in which case the dryer is called a direct heated dryer.Alternatively, the gas stream may consist of air or another (sometimes inert) gas that is preheated.The gas stream is preheated by some means where burner combustion gases do not enter the dryer.Often, indirect heated dryers are used when product contamination is a concern.Other crushing and grinding machines such as cone crusher and professional ball mill manufactured by hongxing machinery can also satisfy different demands of different customers.
Cement ball mill also named as raw material mill, material grinding mill and clinker mill, is the key equipment for grinding after the crush process, which is widely used in the manufacture industries, such as cement, silicate, new building material, refractory material, fertilizer, ferrous metal, nonferrous metal and glass ceramics, and can be used for the dry and wet grinding for all kinds of ores and other grind-able materials.
To make the milling more efficient, we must first be acquainted with the factors.They are mainly the ball mill structure, the rotation speed, the ball mill media, the lining plate, the material fed and the feeding speed, etc.
2.Which of the following uses impact and attrition?a) ball millb) tumbling millc) ultra-fine grindersd) hammer millview answeranswer: cexplanation: grinding takes place due to impact and attrition, it consists set of swing hammers, rotor, classifier wheels and fan wheels.
Ball mill can grind iron ore from 25mm to 150-250 mesh, and with high grinding efficiency, it reduces more load and grinding cost.
Being a leading company in industrial powder processing, engineering stone crushing and construction sand making, vipeak heavy industry machinery engineering stone, construction sand to engineering powder, all equipments from vipeak exert great productivity and stability on working sites, make group company is a high-tech mining machinery company in china.Our service has expanded to the entire world, almost including 75 countries.From being a leading company in industrial powder processing, engineering stone crushing and construction sand making, vipeak heavy industry machinery - straight centrifugal grinder- hyper pressure v type grinderproduction line :- stone crushing & screening plants- sand making & washing plants - grading production line of mqx series super fine ball millbeneficiation equipment :- drying machine- condensing machine- spiral separator- magnetic separator- flotation machine.Group company is a high-tech mining machinery company in china.Our product list : mill series :- ball mill- superfine ball mill- raymond mill.
1. rod mill are usually applied to grinding the w-sn ore and rare metal in the reselection or magneticore-dressing plant in order to avoid the damage caused by the over crushing.2. in the two stage grinding process, if it requires grinding the ore from 20-6mm to 1-3mm in the first stage, rod mill is the best choice, for it has large production capability and high efficiency.The reason is that, when the grinding rod and the grinding ball are in the same weight, the superficial area of grinding rod is much smaller than the grinding ball, the production capability and high efficiency of rod mill will lower than ball mill in the secondary grinding stage.3. sometimes, rod mill can be used for fine crushing instead of the short head cone crusher.If the ore is not too hard, crushing the ore from 19-25mm to 6-10 mesh, rod mill is better than short head cone crusher.For the hard ore stone, short head cone crusher is better.Our company is a professional and reliable ore processing equipment manufacturer.More information about our machine, please feel free to contact with us by phone or e-mail at any time!.
A ball mill is a horizontal cylinder partly filled with steel balls (or occasionally other shapes) that rotates on its axis, imparting a tumbling and cascading action to the balls.Material fed through the mill is crushed by impact and ground by attrition between the balls.The grinding media are usually made of high-chromium steel.The smaller grades are occasionally cylindrical ("pebs") rather than spherical.There exists a speed of rotation (the "critical speed") at which the contents of the mill would simply ride over the roof of the mill due to centrifugal action.The critical speed (rpm) is given by: nc = 42.29/d, where d is the internal diameter in metres.Ball mills are normally operated at around 75% of critical speed, so a mill with diameter 5 metres will turn at around 14 rpm.The mill is usually divided into at least two chambers,(depends upon feed input size presently mill installed with roller press are mostly single chambered), allowing the use of different sizes of grinding media.Large balls are used at the inlet, to crush clinker nodules (which can be over 25 mm in diameter).Ball diameter here is in the range 60-80 mm.In a two-chamber mill, the media in the second chamber are typically in the range 15-40 mm, although media down to 5 mm are sometimes encountered.As a general rule, the size of media has to match the size of material being ground: large media can't produce the ultra-fine particles required in the finished cement, but small media can't break large clinker particles.Mills with as many as four chambers, allowing a tight segregation of media sizes, were once used, but this is now becoming rare.
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