Machinery Sales Inc also carries the following NEW lumber manufacturing woodworking machinery and sawmill equipment.
Grinding in small plants as in larger installations has proven to be the most costly of all unit operations from both capital and operating standpoints Therefore grinding deserves the most scrutiny of all operations during the design procedure.
A recent survey by a major grinding mill manufacturer reveals that more than 80 autogenous or semi autogenous mills having between 100 and 1 000 connected horsepower have been sold during the last twenty years Obviously this type of grinding approach cannot be arbitrarily excluded from consideration in a small installation.
Usually the grinding system in a modern small concentrator consists of one of the following configurations.
This configuration has proven in the past to be a most reliable system due to the fact that rod mills are not particularly susceptible to variations in feed size However the necessity to procure grinding rods may limit the usefulness of this approach in certain locations.
This configuration is employed when it is desired to produce a final ground product having a very high pulp density This situation can be useful for various types of leaching circuits but does not normally apply to flotation concentrators.
Single stage ball milling has proven to be very popular in recent years Both overflow and diaphragm grate ball mills have been used as single stage grinding units If the feed to such a system can be top size limited for example by the use of closed circuit crushing this type of installation can prove to be the most efficient from both the capital and operating standpoint.
Occasionally the liberation requirement for an ore requires very fine primary grinding Usually the most expeditious way to accomplish this objective is by double stage ball milling Both mills are usually operated in closed circuit with separate classifiers.
In smaller plants grinding mill drives should be as simple as possible The drive train usually recommended consists of a slow speed motor which drives the mill pinion through an air clutch This slow speed motor system tends to be slightly more expensive than the alternate drive train consisting of a high speed motor and speed reducer but the ease of maintenance and the simplicity of the slow speed system offset the additional cost.
WM4500 Industrial Sawmill Starting at 119 995 Includes free on site training and installation The WM4500 industrial sawmill can be used as a headrig for breaking down logs for further processing or as a stand alone sawmill for sawing cants boards and finished lumber.
Reliable Equipment Cost Estimates Start Here If you value your time and the quality of your estimates our equipment data is for you Get b udgetary capital costs for over 3 000 pieces of mining and milling equipment and a convenient source of hourly operating costs.
5045E Tractor Loader TSS Transmission Starting at 32 199 or 321 00 per month with 0 for 84 Months Financing Available.
Address: Zhengzhou High-tech Industrial Development Zone, China