Sand Maker-rod Mill Enjoys High Popularity

Nowadays, rod mill is the most effective crushing machine and its performance has achieved the international standard

. It is widely applied in the gravel industry. And it is mainly used for processing or crushing the feldspar, quartz, minerals and other raw materials, and it is also suitable for finely or secondarily crushing the various tough or brittle materials, such as grinding material, refractory material, cement, steel shot, pulverized slag, copper ore, iron ore, gold ore, concrete aggregate, bituminized aggregate. Now it is a most advanced high-efficient low consumption sand-maker in the world. Rod mill has two types to choose from ,the dry type and the wet type.Our company adopts advanced controllable material technology, combined with appropriate grinding media that is coordinate with the actual grinding materials,changed the traditional surface contact to line contact, thus to make the particles more uniformly,and the output higher. The product is very similar to ball mills, except they use long rods for grinding media. The rods grind the ore by tumbling within the the mill, similar to the grinding balls in a ball mill. To prevent the conditions leading to rod charge tangling, the length to diameter ratio is maintained at 1.4 to 1.6. The equipment accepts feed up to about 50 mm (2 in.) and produce a product in the size range of 3000 to 270 mm (4 to 35 mesh). Grinding action is by line contact between the rods extending the length of the mill. Rods tumble and spin in roughly parallel alignment simulating a series of roll crushers. This results in preferential grinding of coarse material and minimizes production of slimes. The machine normally carries 35 to 65% rod charge by volume. The limits on charge level are (1) keeping the feed end trunnion open so that feed will get into the mill, and (2) keeping the rod charge low so rods will not work their way into discharge openings where they can cause rod tangling. The Critical Speed is used for the determination of ball mill ideal operating speed. But for comparison, rod mills would operate between 50% to 95% of the critical speed. The faster the mill speed, the greater the wear on the rods and liners. So, the general rule of thumb for rod mills is to operate no faster than the speed that will obtain the desired product size. Working Principles: The motor drives the rod mill through the reducer and peripheral big gear ,or the low-speed synchronous motor directly drives the rod mill through big gear around rod milling machine to drive the cylinder body rotation.The cylinder body is filled with appropriate grinding medium - steel bar. In the function of centrifugal force and friction force,the grinding medium was promoted to a certain height,and then was thrown or relief in fall state.The materials to be grind were continuously send into the cylinder,and shattered by the moving grinding medium inside,Then,through the overflow and continuous feed strength, the materials will be discharged ,so that to begin next segment procedures. Features and Benefits 1. Higher capability and more even discharging size. Adopted advanced technology of sand maker-rod mill by controlling the input or output materials; related to the users actual grinding materials, choosing an appropriate grinding medium, replaced the traditional surface contact to the linear contact . Therefore, its discharging size is more even, the capability is higher, suitable for various hardness of ore.( Moths hardness 5.5-12). 2. Adjustable fineness of limestone. Through simple adjustment, will change the discharging size ,and inside , has finesse control device and screening device, ensuring not over grinding and avoiding the unqualified product interfusing into end products. Small Tips When Using the Machine: According to the actual situation, the user can choose the dry or wet method of the sand maker-rod mill. As to the materials which contain the ferrum, like quartz sand, dolomite and monazite, the user can add a magnetic separator to finish the processing of de-ironing. As the professional manufacturer of complete sets of mining machinery, such as impact crusher, Henan Hongxing is always doing the best in products and service. rotary kiln:http://www.hx-crusher.com/rotary_kiln.html ball mills:http://www.hxjq-crusher.com/20.html Ball mill:http://www.crusher-machine.com/21.html

by: chris lee

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