factor affect sag mills
SAG is an acronym for semi-autogenous 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% The largest SAG mill is 42' (128m) in diameter, powered by a 28 MW (38,000 HP) motor
The shape of sag increases with the increase in the length of the span For a small span ( up to 300 meters) parabolic method and large span ( like river crossings) catenary method is used for the calculation of sag and tension Factors affecting the sag Conductor weight – Sag of the conductor is directly proportional to its weight The .
The following are factors that have been investigated and applied in conventional ball milling in order to maximize grinding efficiency: a) Mill Geometry and Speed – Bond (1954) observed grinding efficiency to be a function of ball mill diameter, and established empirical relationships for recommended media size and mill speed that take this factor into account
Some dry autogenous mills operating in Canada are 85 m in diameter and 15 m in length These are known as Aerofall mills The Cadia Hill (Australia) wet SAG mill is 122 m in diameter with a 20 MW motor and in 2004 was the largest diameter mill in operation in the world
LG A mill power equation for SAG mills Minerals and Metallurgical Processing Feb 1990 pp57-62 Gross power No load power Net power drawn by the charge (813) The net power is calculated from Net power KD25L e! c/ Watts (814) In equation 814, D is the diameter inside the mill liners and Le is the effective length of the mill including the .
Starting as small as 13 feet (4 m) in diameter on 330 HP and as large as 24' (145 m) in diameter on 3,300 HP, the 911MPE Semi & Fully Autogenous Mills tumble crushed ore without iron or steel grinding media They are used when the crushed ore pieces are hard enough to perform all the grinding SAG mills tumble mainly ore but they use up to 15% volume of steel balls to assist grinding
distribution affects the SAG mill load and the load affects directly the mill power and the efﬁciency of the mill operation (Van Nierop and Moys, 2001) If a SAG mill has been designed with a conventional power or speciﬁc energy model which do not con-sider the projected feed size distribution it is likely that this mill
Grinding circuit design principl , SRK can help determine how these three factors affect the performance of a particular grinding circuit A number of comminution (size reduction) tests are available and each one is focused on a particular piece of equipment and size range , For semi-autogenous grinding (SAG) mills, there are two basic .
Title: Mineralogy for Optimising Mineral Processing Subject: Since start-up of the North American Palladium Lac des Iles Mine, mineralogical services have been used to gain an understanding of the mineralogical factors affecting plant performance, and this has helped in the post-comissioning optimization of the mil l
The feed size distribution together with the ore characteristics (hardness, lithology, alterations, etc) are the most important factors affecting the SAG mills performance
PDF | On Sep 7, 2015, Paul Toor and others published Understanding the effects of liner wear on SAG mill performance
Each mechanical devices are manufactured by a variety of components constituted,components stiffness impact milling machining accuracy is bigThe major factors of affecting milling components stiffness is joint surface contact deformation, friction influence,low rigidity parts and gaps
factors that affect sag mill performance - amonkarsin factors that affect sag mill performance Limestone and Granite Crush Plant in Iran Iran is a very important market of the Middle East Every year, .
SINGLE STAGE SAG/AG MILLING DESIGN ABSTRACT Single stage semi-autogenous / autogenous (S/AG) milling has become a common design for a variety of ore , thus affecting the circulating load , xPebble extraction rates and discharge designs in the pilot mills When combined, these factors often result in a situation where stabilisation of the .
Two new SAG milling models are developed in this work, able to predict power or specific energy consumption, including the usual design variables such as mill size; balls charge level, solids concentration in the SAG mill feed and % of critical speed, but adding a ,
of the energy required by a SAG mill Put another way, the SAG mill energy required according to this statement, is 25 times more than the Ab value to produce the same degree of particle breakage There is a speci ﬁ c gravity factor that affects AG/SAG power ,
You can also get contact with us through online consulting, demand table submission, e-mails and telephones.CALL TO ACTION