Mining & Mineral Processing Industry

Mining & Mineral Processing Parts

Mining and mineral processing Grinding is the final stage of comminution. Particles are reduced from 5 to 250 mm to a final size of 10 to 300 micrometers. Careful control of the grinding circuit is important to grind the ore fine enough for mineral recovery, but not so fine as to become uneconomical of cause sliming during flotation which why need to have good care and expert to handle its wearparts to achieved its maximum productivity

Reliance Steel Technology is your one stop for expert engineering in mining and mineral processing, improvement, update technology and research and development. Call us for our full line of mining and mineral processing parts like rod, ball and semi autogenous grinding mills. We always put emphasis on research, improvement and development in our grinding mill and mining processing equipment to ensure safety, productivity and reliability.

With years of experience, We have the concept and expert engineer to design the grinding mills wearparts to achieved its maximum effectivity and efficiency of the grinding mills application the mining and mineral processing operation.

We provide the best grinding mills wearparts through design, engineering study, modification and alloy selection by considering several important aspects of the grinding mills operation, such as Ratio Aspect (D/L), EGL, Wet/Dry grinding, Liners (Lifter, Plate, Grate etc), Grate/Overflow, Drilling pattern & Bolts, Trunnion, Ball trajectory

To ensure the best performace of the grinding mill liners and wearparts design, Our engineer will work together with customers and design the lining of the grinding mills by calculating and simulating the trajectory of the grinding media, Angle of the lifter bar, Width between lifters, No of liners and Mill operating speed (% of critical speed) so that we can determine and give the best design, modification and best alloy selection of the castings to reach its maximum wear life and durability.

Feed Spout

RST feed spout parts for the feeding section of the grinding mill are tailor made for specific applications to provide maximum availability and minimum maintenance cost. Depending on various applications, feed spout replacement parts such as gold ore, iron ore, silver ore, nickel ore are highly recommended to be applied with grade PRHC1 ranging from 16 to 28% Chromium content and hardness ranging from 52 to 66 RC.

SAG Mill

Can achieve size reductions from 25 cm to 75 microns in on stage. Lower capital cost. Handles wet and sticky material well. Uses a combination of the ore it self and reduced load os steel balls. When balls are used, they are called SEMI – SAG MILLS.

RST manufacture and supply full range of replacement parts for your SAG mill parts like shell liner, middle liner, end liner, lifter bar and grate requirements.

We have long years of experience producing replacement parts for SAG mills. Our customers choose our wear parts because they provide long wear life at a lower cost per ton and maximum productivity driven by low maintenance hours and cost. We always innovate and improve our knowledge and production technology and boost our customers’ productivity with improvements in safety, longer wear life, and lower rigging weight.

Our standard material grades for SAG mill liners application are at par with international standards such as Low Alloy Steel Grade L2B and L2C and High Chromium Iron with 18 - 28% Chrome contents with hardness level 320-370 HB up to 550-650 HB. Multiple material selection is also available and fabricated depending on the case study and customer requirement.

With tight quality control, every stage of manufacturing helps us minimize lead-times and maximize quality. We provide our customers with the following: effective grinding cavity and consistent full use of the wear metal available in the liner segments and minimized downtime due to slow, labour intensive change outs. Our wear parts are produced with high wear resistance guaranteed for proper fit and long wear life.

AG Mill

AG mills results smoother particles. Since they are not contaminated with iron from steel balls, they float better (faster and more selective) than with non – AG. AG mills are more sensitive to feed hardness and size than Ball/Rod Mills.

We are proven efficient in supplying solid performance for AG mill replacement parts from feed liner, shell liners to discharge end liners. Our material development for AG Mill replacement parts are improved to the highest level of quality demand and will help customers to achieve maximum productivity and minimum mill change-out time. We supply AG mill replacement parts to various global mining industries and hold great reputation of our standards of service.

AG mill often require chromium molybdenum steels, high chromium iron and high martensitic steel due to severe impact and abrasive wear resistant requirements. Our products provide reliable and consistent service. Our engineers work closely with maintenance supervisors to reduce the maintenance costs further achieving the desired productivity and efficiency.

Rod Mill

Rod mills are considered fine crushers or coarse grinders. They are preferred over fine crushing machines when the one is clayey or damp. When used, they are normally the first stage in grinding after crushing. Rod mills use rods almost the same length of the mill (within a couple cm’s) to crush the ore between. The rods must be almost the same length as the mill so they remain parallel to the mill walls otherwise they could turn and get jammed.

RST supply full range of rod mill replacement parts from feed opening, shell liners to discharge end. Our products such as liner, lifter and grate are produced with material toughness and high wear resistance. We have standard alloy selection and special alloy to increase the wear parts performance.

Our parts are produced with consistent quality control from start to finish. Typical Rod Mill replacement parts that we supplied such as Liner, Lifter and Grate.

Ball Mill

Ball mills are the choice for fine finishing. They have a length to diameter ratio of 1.5 to less than 1. Some Ball Mills do have a length to diameter ratio of 3 to 5. But those are considered “Tube Mills”.

As one of the most popular grinding mills, ball mill is crucial part thus requiring the right choice of replacement. With years of case study and experience in producing and supplying ball mill overall changeable replacement parts, we are confident to give the only the best from shell liner, lifter, trunnion and other wear parts.

Ball mills are the choice for fine finishing. They have a length to diameter ratio of 1.5 to less than 1. Some Ball Mills do have a length to diameter ratio of 3 to 5. But those are considered “Tube Mills”.

Wide range of product material composition for best long-wear life are available. Parts that produce consistent chemical composition and right level and stable hardness will provide your ball mill with consistent maximum production hours and measurable maintenance schedule. We always developed and research new alloys and manufacturing techniques that will provide improved wear parts for all types of ball mill application.

Our expert engineer will discussed and readily available to discussed and giving a problem solving for the ball mill replacement parts


A fastener is a hardware device that mechanically joins or affixes two or more objects together. In general, fasteners are used to create non-permanent joints; that is, joints that can be removed or dismantled without damaging the joining components. We supplied various component for the grinding mills component such as bolt, nut, recess washer, steel flat washer and rubber seal.

Grinding Media

RST is available to supplied the grinding media for the grinding mills. We have a wide range of alloy available for grinding media depending on the mining application whether it is Gold, Iron, Platinum, Bauxite, Copper, etc.