rod mill feed size

Rod mills accept feed up to about 50 mm (2 in.) and produce a product in the size range of 3000 to 270 mm (–4 to –35 mesh). Grinding action is by line contact between the rods extending the length of the mill. Rods tumble and spin in roughly parallel alignment simulating a series of roll crushers

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tubular rod mills - sciencedirect

tubular rod mills - sciencedirect

Jan 01, 2016 · The rod mill feeds a wet ball mill at a feed size of 1.0 mm (1000 μm) and produces a product with 80% passing a 150 μm screen. The rod mill is in an open grinding circuit. Determine: 1. the shaft power of the rod mill, 2. the size of the industrial mill. Data: Laboratory Standard Bond Test: Rod Mill: Grindability index at 10 mesh = 13.5 kWh/t. Solution

what are the differences between ball mill and rod mill

what are the differences between ball mill and rod mill

Mar 08, 2021 · The rod of diameter from 50 to 100 mm is often used as the grinding medium, and the filling rate of rod mill is 35% to 45%, while filling rate of ball mill is 40% to 50%. Rod is mainly made of several materials: A High carbon steel

amit 135: lesson 8 rod mills mining mill operator training

amit 135: lesson 8 rod mills mining mill operator training

Rod Mill Operations. Designed to accept feed from a secondary crusher. Feed particle size = 6 – 25 mm. Peripheral speed = 85- 146 m/min (280 – 480ft/m in) Reduction ratio = 2 – 20 depending on material. Typically R = 8. Rod Mill Charge: Typically 45% of internal volume; 35% – …

rod mill - an overview | sciencedirect topics

rod mill - an overview | sciencedirect topics

The size of feed particles to a rod mill is coarser than for a ball mill. The usual feed size ranges from 6 to 25 mm. For the efficient use of rods it is necessary that …

horizontal coarse grinding mill rod mill | product

horizontal coarse grinding mill rod mill | product

This type of rod mills normally feeds balls of less than 15 to 30 mm in diameter to produce 80% product size 500 to 1000m. Fig. 3 Overflow Discharge Type (O.F.D. Type)

ball mill vs rod mill | how to choose ball mill or rod

ball mill vs rod mill | how to choose ball mill or rod

In coarse grinding, when the product size is 1-3mm, the processing capacity of the rod mill is greater than that of the ball mill (usually the feed size of rod mill is 15-23mm)

rod mill feed size - grinding & classification circuits

rod mill feed size - grinding & classification circuits

It depends on the rod mill work index and on the desired product size. It will also depend on if you are grinding open or closed circuit and wet or dry. And if you have any stages of grinding, crushing, or classification before it! It will generally be between 10 mm and 50 mm. Sandeep Bisht

effect of rod mill feed sizing on grinding performance

effect of rod mill feed sizing on grinding performance

Mar 30, 2018 · Rod Mill Feed Size & Size Distribution Typically, feed to rod mills comes from closed circuit crushing with screens with a top size of 1 to 1¼” , or 25 to 32 mm (F80 of 15,000 to 20,000 µm). Deviations above this size have often been associated with extremely poor efficiency, as measured by the Bond Operating Work Index, especially on ores

ball mills vs rod mills - 911 metallurgist

ball mills vs rod mills - 911 metallurgist

Jul 03, 2017 · Because of this, the rod mill can effectively reduce 1″ feed size to 10 mesh or finer in open circuit. The voids (or interstitial space) within a rod load are approximately half those in a ball mill grinding load. Rods in place weigh approximately 400 pounds per cu. ft. and balls in place approximately 300 pounds per cu. ft

ball mill design/power calculation

ball mill design/power calculation

Dec 12, 2016 · A wet grinding ball mill in closed circuit is to be fed 100 TPH of a material with a work index of 15 and a size distribution of 80% passing ¼ inch (6350 microns). The required product size

grinding mills - 911 metallurgist

grinding mills - 911 metallurgist

The rod mill is exceptionally well suited to handle coarse feed and to control the top size of the product. Rod mill products are generally coarser than those produced in a ball mill. Because of these characteristics, the rod mill has also found wide acceptance by manufacturers of fine concrete aggregates, where rigid state or federal

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