1 from the ball mill feed size distribution calculate the 75 μ as 100 – 193 807 75 μ 2 from the ball mill discharge size distribution calculate the 75 μ as 100 – 265 735 75 μ 3 calculate the cse as the average 807 735 2 771 75 μ.
Ball mill control strategy proposal is total feed constant by adjusting the fresh feed at start the ingredients quantities that fall do wn from feed bins to transporters are
Ball mill feed end cap2 china mainland welding equipment ball mill feed end cap2complete details about ball mill feed end total annual sales volume number lubricating system hydraulic system and control system and so on
By gaining full control of the product flow in the weba chute customers can greatly reduce wear rates traditionally experienced in the mill feed spout and reduce the associated costs related to
Control system ball mill working from the feed device material enters into the ball mill compartment where there is ladder plate or corrugated plate with grinding balls of various specifications in order to make the material and grinding balls distributed uniformly and avoid starting difficulties caused by
Ensuring the feed is spread thinly across the face of the roller mills can present some problems as mechanical feed gates can easily become obstructed impairing the smooth and regular flow of product into the nip of the roller
For ball mill grinding process random interference by many factors processes complex mechanism there is a big inertia and the lag the fuzzy control theory is introduced into the mill control system has strong robustness can effectively overcome the mill main motor power nonlinear timevarying factors such as interference system is reliable adjust speed antiinterference ability can
From the ball mill feed size distribution calculate the 75 μ as 100 – 193 807 75 μ example if the plant metallurgist simply added water to the cyclone feed depending on the control system it is possible the circulating load would build beyond the capacity of the existing apexes causing roping or
In ore concentration plant single parameter and fixed value feeding control is a traditional method to control the feed rate of ball mill this system is composed of recorder scr governor belt scales funnel automatic switching device and three dc motor driving belt
Jan 01 2000 abstract the magotteaux automatic ball charger abc optimizes ball mill performance by controlling ball addition each abc consists of a storage hopper vibrating feeder load cells local control electronics and computer link to the grinding process the system continuously monitors absorbed power feed rate and ball consumption to calculate the proper ball addition rate to maintain optimum
Nov 01 2004 the particle size distributions of mill feed mill discharge and the hydrocyclone products are presented in fig 6 fig 7 as can be seen the size distribution of the overflow is slightly coarser for harder material nevertheless the maximum size is approximately the same the control system has fulfilled the intended
Optimization control the ball mill application automatically adjusts fresh feed depending on desired blaine or fineness this ensures that the best throughput and quality is maintained for a given recipe upset control in the event of mill jamming the application will
Ore per day in six overflow ball mills the concentrate is transported to a smelter a few miles away the crushed ore from primary and secondary ores is conveyed into bins the ore from the bins is fed into the ball mill using a conveyor belt the ball mill grinding circuit is illustrated in figure 2 solids 789 circulating load 474 advance
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The control loop will attempt to add water to cyclone 1 sump to achieve a particle size of 15 300 m if the hardness of the ore increases the particle size in the mill discharge from ball mill 1 will increase with the same water addition to sump 1 the particle size of cyclone 1 overflow will increase this will decrease the ratio and
The critical speed and ball mills usually operate at 65 to 75 of the critical speed ball mills are generally used to grind material 14 inch and finer down to the particle size of 20 to 75 microns to achieve a reasonable efficiency with ball mills they must be operated in a closed system with oversize material continuously
The design of a ball mill can vary significantly depending on the size the equipment used to load the starting material feeders and the system for discharging the output product the size of a mill is usually characterized by the ratio length to diameter and this ratio most frequently varies from 05
• the choice of a control method and control system structure for a particular ball mill grinding process should normally ta ke into account certain economic value