显示标签为“ball mill”的博文。显示所有博文
显示标签为“ball mill”的博文。显示所有博文

2010年8月30日星期一

ball milling machine how to use

A ball mill is used to grind solid materials into powders. It's commonly used to make paints and ceramics. It rotates on a horizontal axis and uses iron or stainless steel balls to crush materials into powder. With a container and a power drill, you can quickly make your own ball mill.

first,Installation Ball Mill
      The quality of ball mill installation quality, the ability of mill is the key to normal work. Various types of ball mill installation method and sequence similar. To ensure the smooth functioning of ball mill and reducing the harm to the buildings, it must be installed in its weight of 2.5 to 3 times the reinforced concrete foundation.

      Installation ball mill, the first should be installed main bearing. In order to avoid aggravating the problem of the hollow crankshaft bearings lining and shoulder wear, the two main bearing the base plate of elevation difference in the length of each meter should not more than 0.25 mm. Secondly, the installation of the ball mill cylinder of the light of the specific conditions, can be pre-assembled the entire English Department loaded directly, but also can be divided into several parts of the installation, adjustment and should check with the centerline Journal and the ball mill, the error must ensure that its Concentric within per meter in length should be less than 0.25 mm. The final installation of the transmission components (small gear, uranium, coupling, reducer, motor, etc.) During installation, product technical standards should be measured and adjusted. Gear check the radial pendulum poor and small gear meshing performance; gear reducer and small concentric degrees, and the motor and reducer concentric degrees. When fully installed are in line with requests, we can not go on the basis of bolt main bearing floor and the last watering.

Second, Operation and maintenance of ball mill

    If the ball machine running high rate of grinding effect, and to strictly abide by the operation and maintenance of order. Starting in the ball mill, should check whether the tightening bolt connections; gears, coupling, etc., as well as the keys to the first mine-spoon Solid tight situation.

    Check the oil tank reducer and the adequacy of the lubricating device and instrumentation whether illnesses, pipes unimpeded. Check ball mill with classifier equipment availability impede functioning of the surrounding debris, and then use the cable car to the ball mill-week, the ball loose tube Dutch and ores, and to inspect the ring gear and pinion meshing, there abnormal sounds. The start order is first activated ball mill lubricants pump, when the hydraulic reach 1.5 to 2.0 kg / cm 2 o'clock, the ball mill will be allowed start again start classifier. Everything is running normally, and so on, can begin to draw mine. In operation process, should always pay attention to bearing temperature should not exceed 50 ~ 65 ° C. The attention to the regular motor, voltage, current, temperature, audio, and so on. Attention lubrication system at any time, the oil tank should not exceed 35 ~ 40 ° c, to tubing pressure should be maintained at 1.5 to 2.0 kg / cm 2. Check size gear, the main bearings, such as grading machine transmission components reducer lubrication, and attention to the observation before and after the ball mill Cover, Simplified and exclusive ore bins overflow tank and machine classification back to the trough of sand plug the leak and sand. Regular attention to the changing nature of ore, according to the situation promptly and take appropriate measures.

     Stop ball mill, the first stop to the mining machine, within the ore processing to be simplified after the end of ball mill motor to stop, the last stop pumps. With the upgrade installations classifier to the spiral of sand, and then stop classifier.

2010年8月29日星期日

ball milling

As a piece of mineral processing equipment, a ball mill  is widely used in beneficiation, building material and chemical industries. Ball mill is suitable for dry-type ore grinding and wet-type ore grinding. According to different discharging methods, ball mills fall into grate ball mill and overflow ball mill.

Working Principle:
Our ball mill is of horizontal, cylindrical and tubular structure. It comes with two cabins and is a grate ball mill. The materials are evenly fed through the charging device to first warehouse where there are step scales boards, corrugated scale boards and different specifications of steel balls. When the cylinder rotates, the centrifugal force produced causes the steel balls to impact and grind the materials in the ball mill. The materials are then lead to the second cabin for further milling until they turn into powders and are discharged from the outlet.

Ways of Improving Productivity:
In addition to manufacturing ball mill, we also carry our research on improving its productivity. Generally speaking, the productivity of ball mil can be improved by
1. adding fine crusher before the ball mill.
2. improving grinding system to achieve better grinding efficiency.
3. adding powder concentrator..

Range of Applications:
Ball mill is a mineral processing machine for milling the materials into powders after they are crushed. It is widely applied to the production of cements, silicate products, building materials, fireproof materials, fertilizers, glass, ceramics as well as nonferrous and ferrous metal processing industries. It could carry out dry and wet millings on different materials.

Structural Features:
This ball mill is made up of feeding part, discharging part, gyre part, transmission part (transmission part includes reducer, small transmission gear, generator and electrical control) and so on. It enjoys features like good abrasive resistance, stable and reliable operation.
Inner structure of the ball mill is made up of lining plate, grate plate, diaphragm, feeding and discharging devices. The lining plate is used to protect the tank body in order to avoid the impact and abrasion from materials. Different types of lining plates can be used to adjust the movement of materials. Our lining plates are provided by Luoyang anti-abrasion academe and have a large share in the global market with their fine design.

Usage in Mineral Processing:
Minerals are firstly crushed by jaw crusher until they are crushed to suitable sizes. They are then equally fed to a ball mill with a hoister and a feeder. Later, they are further crushed and milled in the ball mill. Finally, fine minerals are classified by a spiral classifier with the principle that solid particles sink at different speeds in liquid.