ball mill circuit design criteria bangladesh

Main Equipment:Jaw crusher, impact crusher, hammer crusher, vibrating screen, classifier, ball mill, etc.

Cement grinding plant is the final stage in the production of cement, which is separated from the finished cement production units. It mixes cement clinker with other certain amount of mixed materials for grinding, and then produces the finished cement.

Gold ore whose types of deposits are diverse and complex is the mineral assemblage of gold. With features of chalcophile affinity and high melting point, the gold ore includes conglomerate type, porphyry type, quartz vein type and volcanic rock type, etc.

Design Criteria The MinasRio regrind mill circuit was designed using pilot scale test results obtained from a Vertimill pilot testcampaign Metso 2011 The tests were carried out using more than 8 tons of flotation concentrate that was prepared in Brazil and shipped to

Mill Type Overview Three types of mill design are common The Overflow Discharge mill is best suited for fine grinding to 75 – 106 microns The Diaphram or Grate Discharge mill keeps coarse particles within the mill for additional grinding and typically used for grinds to 150 – 250 microns The CenterPeriphery Discharge mill has feed reporting from both ends and the product discharges

The laboratory grinding circuit consists of an overflow type ball mill 30 cm × 30 cm a sump fitted with a variable speed pump and a hydrocyclone classifier 30 mm The schematic diagram of the circuit is shown in Fig 1 There are two local controllers that form part of the process Sump level is maintained constant by a variable speed

Mill grinding Wikipedia A mill is a device that breaks solid materials into smaller pieces by grinding crushing or cutting To calculate the needed grinding work against the grain size changing three halfempirical models are used work index measured in a laboratory ball mill kilowatthours per metric or short ton P80 is the mill circuit product

mill circuit Figure 1 this is achieved by taking a sample of cyclone underflow and a sample of ball mill discharge and then running a screen analysis in the lab For forward fed circuits eg primary ball

Ball Mill Design The selection of ball mill design criteria was much more straightforward than for the SAG mill Bond work index testing using a 200 mesh closing screen was done on 7 samples as listed above The median hardness for these samples was 155 kWht and that is the value chosen by Davy for ball mill design

This paper discusses the process design and layout of the Constancia Project comminution circuit The circuit consists of a 60 x 113 primary crusher two 16 MW SAG mills and two 16 MW ball mills All four mills are twin pinion with wound rotor motor and gearbox drives Provision for pebble crushing is

AGSAG mill based circuits and this has impacted on the ability of companies to obtain funding Bailey et al 2009 published guidelines on the use of typical SAG millbased circuit design methods with particular focus on the use and misuse of JKSimMet A follow up paper by Lane et al in

The ball mill has higher circulation load it generates only 30 35 of actual fines you require to be called as product If your product size needed is 100 passing 45 micron then the ball mill total discharge material will contain normally 30 of 45 micron The rest is oversize which has to be ground again

Figure 5 High–low wave ball mill liner Materials The selection of the material of construction is a function of the application abrasivity of ore size of mill corrosion environment size of balls mill speed etc liner design and material of construction are integral and cannot be chosen in isolation