Processing capacity:140-498t/h
Feeding size:≤19mm
Appliable Materials: silicate,new-type building material,non-ferrous metal,copper mine,ore,ceramics etc. All grindable materials, various metal ores, non-metallic ores, non-flammable and explosive materials
Get PriceAmit 135 lesson 6 grinding circuit mining mill operator semiautogenous grinding sag mill wet or dry higher capacity than ag mill grinding primary coarse grinding up to 400 mm feed size grinding media is grinding feed plus 412 ball charge ball dia100 125 mm high capacity short retention time less sensitive to feed composition critical size material semiautogenous mill
Autogenous mills and ball and rod mills in malaysia autogenous grinding of glass cullet in a stirred mill the effective sizes of sand required for a slow sand filter and rapid gravity filter are 035 mm and 0612 mm respectively pressure filter media requires a rough microstructure to be able to trap the fiautogenous mills
The 6 diameter x 2 long continuous feed autogenoussemiautogenous mill with base amp stand description designed for autogenous or semiautogenous grinding the 6 x 2 continuous feed autogenous or semiautogenous mill may be used as a pilot plant to determine the size for larger mills or for small scale milling projects
Ball mills autogenous and semiautogenous grinding mills matched the forecasting values against the factual capacities of the onsite mills as a consequence it is concluded that the meth cdbm for initial size of ball mill feed and ef5 for final milling size
semiautogenous sag grinding is a grinding process carried out with small amount of ball charge 415 unlike ball mills and with the help of bigger parts crumbling the smaller parts of ore to achieve this type of grinding sag mills with large diameter and short length have been developed to take advantage of the kinetic energy of the
127 for the rod mill and 067 for the ball mill the particle size distributions reported are shown in figure 1 it follows that the no 1 rod millball mill circuit was operating very ef ciently when comparing the combined operating work indices for both mills with the rod mill and ball mill laboratory work indices
The designs of autogenous and semiautogenous sag grindings mills are described followed by the description of their methods of operation in grinding circuits involving crushers and ball mills methods of estimating sag mill volumes mill charges feed size and power consumptions and optimum speeds of rotation during operation are described
For the mining industry our semiautogenous sag grinding mill uses a minimal ball charge in the range of 615 percent it is primarily used in the gold copper and platinum industries as well as in the lead zinc silver and nickel industries autogenous ag grinding mills involve no grinding media as the ore itself acts as the grinding
The circuit comprises a sag mill 12 m diameter by 61 m length belly inside liners the effective grinding volume two pebble crushers and two ball mills in parallel closed with cyclones the sag mill is fitted with a 20 mw gearless drive motor with bidirectional rotational capacity
Design commercial grinding plants the macpherson autogenous grindability test is performed with a light ball charge 8 so it is actually a sag mill test but the results from the test have been used for the analysis of both fullyautogenous fag and semiautogenous sag circuits the fine feed size to the mill
The ball milling process prepared by rod mill sag mill autogenous semi autogenous grinding mill jaw crusher cone crusher and other single or multistage crushing and screening ball mill manufacturer with more than 35 years of experience in grinding balls mill technology jxsc design and produce heavyduty scientific ball mill
Thus it offers a savings in capital and operating costs autogenous mills are available for both wet and dry grinding the diameter of autogenous mills is normally two to three times the length the ore charge is usually 25 to 35 of the mill volumeautogenous mills have grate discharges to retain the coarse grinding media in the mill
Autogenous ag mills autogenous grinding involves no grinding media as the ore itself is the grinding media the feed size to this mill is limited to the maximum size that can be practically conveyed and introduced into the mill it is an autogenous mill in nature but it employs grinding balls to assist in its grinding just like in a ball
Our agsag mill liners are manufactured to the highest industry standard for autogenous grindingag semiautogenous grindingsag primary secondary and regrind rod or ball mills mgs casting mill lining system designed by our highly trained and dedicated team throughout the world has taken your entire comminution circuit into consideration
Medium size and big ball millsautogenous and semiautogenous mills di m egl m p kw 43 61 76 1600 2100 46 64 80 2000 2600 49 67 86 2500 3300 52 73 89 3200 3900 55 76 95 3800 4800 58 80 101 4600 5900 61 83 104 5500 6900 64 89 110 6700 8300
Jul 20 2017 semiautogenous plus ball mill has been the work horse of mills sag vs ball mill advantages ag amp sag mill grinding compared which is best grinding rods and balls can be obtained in uniform sizes weights and of a specified quality their action in a mill
When future tonnage is to be increased the sag mill can feed downstream ball milling to boost capacity fullertraylor sagag mills range in size from 43m through 122m in diameter with powers as high as 28000 kw our team of product engineers continually improves sagag mill designs in order to provide the most robust safe and efficient grinding mills available
91 in a sag mill the dimensions of the mill were 975 m 35 m and the specific gravities of the mineral and that of the balls charged were 41 and 79 respectively the mill was rotated at 75 of its critical speed when 8 of the mill volume was charged with grinding balls estimate 1 the mill
The ag mill autogenous grinding mill is a mediumfree grinding machine in order to improve the processing capacity 2 3 steel balls can be added also known as semi autogenous grinding mill or sag mill raw ore or coarse crushed ore from the mine can be directly fed into the ag mill sag mill for grinding
Jun 06 2016 the grinding circuit comprises one 8530 mm diameter x 3650 mm semiautogenous mill driven by a 3954 kw variable speed dc motor and one 5030 mm diameter x 8340 mm secondary ball mill driven by a 3730 kw synchronous motor
What is a sag mill the structure of the sag mill semiautomatic grinding mill and the ag mill autogenous grinding millare exactly the same except that a certain proportion of auxiliary grinding media such as steel balls or steel rods are added as needed during the process of the ag mill operation some ores with diameters greater than 20mm but less than 80mm are not easily ground
Semi autogenous wet ball mills sizes and capacities the grinding media may be the ore itself autogenous grinding bars balls world use ball mills and 38 use autogenous or semi autogenous grinding equipped with a 40 cm diameter mill in closed circuit with a cyclone and the
Autogenous ag mills autogenous grinding involves no grinding media as the ore itself is the grinding media the feed size to this mill is limited to the maximum size that can be practically conveyed and introduced into the mill it is an autogenous mill in nature but it employs grinding balls to assist in its grinding just like in a ball
Autogenous mills semiautogenous mills and ball mills for wet x dry grinding ball mills x air separators x dryers drive for drive capacities of up to 16000 kw supported grinding mills up to the largest sizes sagball mill
Jan 01 2016 the designs of autogenous and semiautogenous sag grindings mills are described followed by the description of their methods of operation in grinding circuits involving crushers and ball mills methods of estimating sag mill volumes mill charges feed size and power consumptions and optimum speeds of rotation during operation are described
Semiautogenous grinding sag mill wet or dry higher capacity than ag mill grinding primary coarse grinding up to 400 mm feed size grinding media is grinding feed plus 412 ball charge ball dia100 125 mm high capacity short retention time less sensitive to feed composition critical size material semiautogenous mill
Apr 09 2018 if semiautogenous grinding is indicated the source for and cost of obtaining high quality balls in the 100 mm to 125 mm size range should be reviewed the grinding balls used in semiautogenous mills must be of top quality so that they will not break from the impact forces encountered in primary semiautogenous mills
Autogenous mills or ag mills can accomplish the same size reduction work as two or three stages of crushing and screening often used in grinding at modern mineral processing plants ag mills reduce the material directly to the desired final size or prepare it for the following grinding stages
Semiautogenous metso outotec sag mills as they are often called can accomplish the same size reduction work as two or three stages of crushing and screening often used in grinding at modern mineral processing plants sag mills reduce the material directly to the desired final size or prepare it for the following grinding stages
Jan 27 2020 this guide will refer to the two most common varieties semiautogenous sag and ball mills key considerations numerous factors must be considered when selecting a mill liner design including required grinding action mill size as well as ore and grinding
Sag is an acronym for semiautogenous grinding sag mills are autogenous mills that also use grinding balls like a ball mill a sag mill is usually a primary or first stage grinder sag mills use a ball charge of 8 to 21 6 7 the largest sag mill is 42 128m in diameter powered by a 28 mw 38000 hp motor 8 a sag mill with a 44
Additional grinding in the ball mill or corrected ball mill feed t2 is the 80 passing dimension of the corrected ball mill feed figure 1 comparison of the particle size distribution slopes figure 2 relationship between the transfer size distribution slope and t 80 or awi0bwi figure 3 typical circuit and shortcut taken by the
The circuit comprises a sag mill 12 m diameter by 61 m length belly inside liners the effective grinding volume two pebble crushers and two ball mills in parallel closed with cyclones the sag mill is fitted with a 20 mw gearless drive motor with bidirectional rotational capacity
The ag mill autogenous grinding mill is a mediumfree grinding machine in order to improve the processing capacity 2 3 steel balls can be added also known as semi autogenous grinding mill or sag mill raw ore or coarse crushed ore from the mine can be directly fed into the ag mill sag mill for grinding
If a ball mill uses little or no water during grinding it is a dry mill if a ball mill uses water during grinding it is a wet mill a typical ball mill will have a drum length that is 1 or 15 times the drum diameter ball mills with a drum length to diameter ratio greater than 15 are referred to as tube mills ball mills may be
Xinhai autogenous mill has high production efficiencya wet autogenous mill that materials as grinding medium feeding particle size 200350mm marketingytxinhaicom 0086 15311826765
Ball mill is the key equipment for grinding materials those grinding mills are widely used in the mining process and it has a wide range of usage in grinding mineral or material into fine powder such as gold ironzinc ore copper etc jxsc mining produce reliable effective ball mill for long life and minimum maintenance incorporate many of the qualities which have made us being
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