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MTW Trapezium Mill

MTW Trapezium Mill

Brief Introduction

mtw grinding mill MTW continental trapezoid mill are designed by our experts, according to advices of customers' long-term experiences. They adopt bevel gear integral transmission, inner light-oil lubrication system, arc whirl tube and another proprietary technology. And obtain international advanced technology as well as many proprietary intellectual property rights.

This series mills are mainly applied to the powder processing of mineral products in the industries of metallurgy , construction materials, chemical, and mining, etc. They can produce powder from various non-flammable and non-explosive mineral materials with Mohs hardness below 9.3 and humidity below 6%, such as quartz, feldspar, calcite, talcum ,barite, fluoride, xircom, cinder, white lime, cement clinker, activated carbon, dolomite, granite, soft coal, coking coal, lignite, magnesia, chromium oxide green, gold ore, red clay, clay, kaolin, coke, coal gangue, porcelain clay, kyanite, fluorspar, bentonite, medicinal stone liparite, diabase, pyrophyllite, shale red stone, emeraldite, basalt, gypsum, graphite, carborundun, heat insulating material, etc.

Main Structure

The standard configuration of MTW series Mill consists of main unit, powder classifier, blower, elevator, feeder, hopper, cyclone collector, dust catcher, blower, motor, pipe, electric control box and so on.

MTW series mill system adopts vertical structure, occupies only a small area and main unit owns sealed gear box as well as transmits evenly. The important parts adopt high quality steel. The electrical system adopts centralization of control. Feed size is small and light that save the energy.

Features and Benefits

MTW series mills adopt bevel gear integral transmission that compact the whole structure and simplify the installation as well as improve the efficiency.

MTW series mills adopt light-oil lubrication achieve the lubrication of bearing without oil pump and lubrication station．

MTW series mills adopt arc whirl tube reduce the resistance and avoid the air-stop and so on.

The edge of MTW series mill adopts wearable alloy materials which improve the service life. The changeable edge is easy to change that save time and cost. The curved surface shovel makes a vertical material liner which increases the working face and capacity.

Adopt isolating structure between the inner core and mixed air flow that improve the classifying efficiency and precision.

MTW series mill adopt the same curved surface which avoids the eddy effect.

Working Principle

Firstly, raw material should be crushed by the jaw crusher to the size specified, and then the crushed stuff is elevated into a hopper from which the stuff is loaded, through the vibrating feeder, evenly and continuously into the grinding chamber for power-processing. After this, the ground stuff is carried by the air from the blower into the classifier for screening. The fine powders are blow into the cyclone collector and are poured out through the output-powder valve, meanwhile, the final products and the rough stuff after the screening will be recycled back into the grinding chamber for regrinding. The set's airflow system is closely sealed up and circulated under condition of negative and positive pressure.

The grinder is driven by rotation of the central shaft through decelerator, with the up end of the axle connecting to a quincunx-rack upon which the grinding equipment is fixed. The whole set equipment turns together with the axle along the grinding ring while the rollers rotate driven by the fractional force. A set of shovel are installed at the piece under the lower-end of the rollers. While turning together with the rollers, the shovels shed the stuff onto the gap between the rollers and the ring and the stuff layer is formed there.

The rotating rollers, while turning together with the ring, grind the stuff layer into power. To separate the ground stuff into the fine power-product and the rough stuff is done through vane on the turntable driven by a speed adjustable motor. The turning speed of the impeller can be adjusted to the requirement of the fineness of powder products.

It plays an important role in ensuring the smooth functioning of the grinder. As the high-speed revolving air current mixed with ground stuff is flown into the cyclone-collector, the ground stuff is separated from the air-current.