Ball mill is the key equipment for grinding crushed materials, which can be used for grinding limestone, dolomite, calcite and other ores.
According to the nature and formation of ores, we should choose the mill size about the different configuration.Different ores should use different beneficiation process.Different areas of similar ore beneficiation process are different.We should draw the beneficiation flow chart according to the actual situation for choosing the right ball mill.
The ball mill is one of the necessary equipment for the mine beneficiation plant, and the investment in the ball mill accounted for a large proportion of the entire beneficiation plant.The ball mill balls quality, quantity, and size will all affect the grinding effect of the ball mill.In addition, while grinding the ore block, the steel balls continuously wear and become smaller until it fails, so the grinding balls consumption is extremely large.If the ball mill is loaded with too many grinding balls, the steel balls are easily overlapped with each other, and the grinding effect is lost.Moreover, some of the steel balls are thrown before the height is raised, which reduces the grinding capacity as a whole and increases the power of the ball mill.If the ball mill contains too few balls and there is not enough capacity between the steel balls to grind the material, it will prolong the working time of the ball mill, which will not only consume a lot of energy, but also cause low grinding efficiency.Therefore, the rationality of ball mill ball loading very important.
The housing of the cylinder-conical ball mill consist of two cones and a short cylindrical part between them (pic.4).This change in the shape of a cylindrical mill is highly advisable, because achieved the proportionality between the force and useful resistance.The peripheral speed of the conical mill drum gradually decreases in the direction from the cylindrical part to the discharge outlet in the same direction reduced lifting angle of balls inside the mill, and consequently decreases their kinetic energy.The amount of milled pieces also gradually decreases as approaching to the place of unloading and this reduces energy consumption for grinding.
Preparation of pulverized coal as fuel with an intermediate bunker is shown in below fig.1.The fuel moves to the automatic balance and then goes to the feeder and ball mill through which hot air is blown.Air heater dries the pulverized coal and carries it from the ballmill to the separator.
The ball mill is one of the most widely used super fineness grinding equipments in the industry.There are many types such as tube ball mill, cement ball mill, super fineness and energy-saving ball mill, overflow ball mill, chinaware ball mill, and grid ball mill.Ball mill is mainly used to grind materials in mineral, cement, refractory, chemical industry, etc.Ball mill has dry and wet ways.
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