SAG mill is an investment that can produce handsome returns if extra production is needed or simply to give the mine the option to mill the hardest ores at design throughput rates. Typical tests required to define a hardness variability function, are given below in Figure 1. The
The model is optimized considering a yearly cost function, with hourly resolution for the solar irradiance and hardness models. The results show that integrating solar …
Control stabilization for SAG mills. BrainWave is ideally suited to stabilize the operation of SAG mills. Effective grinding in a SAG mill depends largely on how it is loaded. A mill containing too much material does not allow for adequate movement of the ore and balls. A mill that does not contain enough material does not take advantage of the ...
A data set of mill operating data is collected from published information and compared to predictions made by two published mill power draw models for SAG mills (Austin's SAG model and Morrell's C-model). A third model (Hogg and Fuerstenau) is fit to each survey and the principal fitting parameter is tabulated. Power measurement
Fuller-Traylor SAG/AG Mills range in size from 4.3m through 12.2m in diameter with powers as high as 28,000 kW. Our team of product engineers continually improves SAG/AG Mill …
Full case in PDF. ME Elecmetal's integral approach to mining is committed to add value into processes through fully-integrated ME FIT solutions. In this case, by testing new SAG mill liner designs in order to improve throughput, reduce pebble load and optimize reline times. Review the entire article by downloading the PDF.
Product Size: All passing 6 mesh with 80% passing 20 mesh. Net power from pilot plant: 16.5 KWH/ST. Mill, gear and pinion friction multiplier: 1.025. Mill Power required at pinionshaft = (240 x 16.5 x 1.025) ÷ 0.746 = 5440 Hp. Speed reducer efficiency: 98%. 5440 Hp ÷ 0.98 = 5550 HP (required minimum motor output power).
Such behaviour is commonplace with SAG mills and gives rise to a significant overall reduction in average throughput which might be as high as 10%. This paper provides a theoretical analysis of the causes of oscillatory behaviour in SAG mills using conventional control system theory and modelling. The paper is illustrated by trend plots taken ...
Upgrade your SAG mill feed chute seal M 10-23 1000-12-ENG V2 Product datasheet A proper seal makes all the difference in the way your SAG mill performs. A relatively minor wear part, the feed chute seal affects performance, lifecycle and safety with your SAG mill – and the stakes are high should it happen to fail.
Sagmilling is home to a collection of both free and subscription-based calculation tools to aid metallurgical process engineers perform comminution calculations. Grinding circuit design tools, including for SAG mill-ball mill circuits, and geometallurgy energy models are available to subscribers. The online library of technical articles ...
both, a variable speed SAG mill drive, and the ability to handle variations in the pebble crusher feed rate. Monzonite Bond ball mill work indices (Wi) averaged 17.1kWh/t, with a
EF5BM=[ P80+10.3 1.145×P80] ( 3 ) The EF4 formula requires both the rod mill and ball mill work index (rod mill Wi is used to calculate the optimal feed size) and because this is a "single-stage ball mill" calculation, the F80 is actually the rod mill feed size (10,000 µm) from Table 1 and the P80 is the ball mill circuit product. The EF5 factor only applies …
10 Years of History of Antamina's Sag Mill - Free download as PDF File (.pdf), Text File (.txt) or read online for free. Scribd is the world's largest social reading and publishing site.
SAG mills use a combination of steel balls and rock particles as grinding media, while AG mills use only the ore itself. Both types of mills are used for grinding ore in mineral processing operations, but SAG mills are larger in size and can grind larger quantities of ore. AG mills, on the other hand, are smaller and are typically used for ...
Walter.valery@ Reduced attrition ABSTRACT Slurry pooling, excessive accumulation of slurry in the mill, and the Toe associated loss of throughput and grind, are well recognised on low- aspect, single-stage SAG mills. However, it is becoming apparent that a wide range of the high-aspect mills also suffer from pooling issues.
This documentation describes the operating and underlying mathematics of the SAGMILLING grinding circuit modelling program. It is intended to be used by the …
The power draw model for a SAG mill cylinder of the following form: Where: P is the power evolved at the mill shell, kW; K and A are empirical fitting factors (use 10.6 and 1.03, respectively) D is the mill effective diameter (inside the effective liner thickness), m; L is the mill effective grinding length (also referred to as the 'belly ...
1. SAG mill is the primary tool for grinding. SAG mill is used before the other mills. Ball mill is a secondary, and it is used after the SAG mill. 2. SAG mill breaks the raw material into pieces for the further grinding. Ball mill is used to grind the pieces of raw material into. powder-like structures. 3.
An optimization is carried out to minimize the yearly cost of energy for the operation of the SAG mill. This cost includes the energy consumption cost in $/kWh and the capital cost for the PV-BESS infrastructure, prorated over the life of the battery system, accounting for the discount rate through an annuity factor (Pamparana et al. 2019a, …
The SGI equation uses a transfer size between a SAG and ball mill; it is proposed that a synthetic transfer size of 2100 µm be used to model single-stage SAG mills. 5.9ˇ √˙˝ ˛ . ˚ 0.96 0.985˜ !"# ˝ $ ˝ √˙˝ %&'() (2) where: SGI is the SAG Grindability Index, minutes, P80 is the SAG hydrocyclone overflow 80% passing size, µm
Бүтээгдэхүүний тодорхойлолт SAG Mill Liner AG Mill Liner L2C L2B Mill Liner Cr-Mo Mill Liner H&G-ээс Cr-Mo материал ашигладаг (AS2074 Стандарт), SAG Mill Liner AG Mill. ... Сараалжтай доторлогоо ...
Gross power = 265 + 1.26 × (2,233 + 215) = 3,349 kW. The conversion between motor input (gross) power and mill shell power, described earlier, is 0.931. Therefore, the predicted power at the mill shell is 3,119 kW, which is 71 kW less than the measured shell power (3,190 kW), a difference of 2%.
Based on experience, mill-liner designs have moved toward more open-shell lifter spacing, increased pulp lifter volumetric capacity, and a grate design to facilitate …
(EGL) SAG mill driven by a 24,000 kW gearless drive. The SAG mill feeds two FL ball mills each 26 ft. in diameter × 40 ft. long (EGL), each driven by a 16,400 kW drive. The SAG mill is one of the largest volumetric capacity SAG mills in the world and represented the first 40 ft. SAG mill in Peru (Garcia & Villanueva, 2013 [1]).