Grinding Ball
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  • GM-1: High Chrome Cast Grinding Ball for Ball Mill / SAG Mill / Tower Mill
  • GM-1: High Chrome Cast Grinding Ball for Ball Mill / SAG Mill / Tower Mill
  • GM-1: High Chrome Cast Grinding Ball for Ball Mill / SAG Mill / Tower Mill
  • GM-1: High Chrome Cast Grinding Ball for Ball Mill / SAG Mill / Tower Mill
  • GM-1: High Chrome Cast Grinding Ball for Ball Mill / SAG Mill / Tower Mill
  • GM-1: High Chrome Cast Grinding Ball for Ball Mill / SAG Mill / Tower Mill
  • GM-1: High Chrome Cast Grinding Ball for Ball Mill / SAG Mill / Tower Mill
  • GM-1: High Chrome Cast Grinding Ball for Ball Mill / SAG Mill / Tower Mill
  • GM-1: High Chrome Cast Grinding Ball for Ball Mill / SAG Mill / Tower Mill
  • GM-1: High Chrome Cast Grinding Ball for Ball Mill / SAG Mill / Tower Mill
  • GM-1: High Chrome Cast Grinding Ball for Ball Mill / SAG Mill / Tower Mill
  • GM-1: High Chrome Cast Grinding Ball for Ball Mill / SAG Mill / Tower Mill

GM-1: High Chrome Cast Grinding Ball for Ball Mill / SAG Mill / Tower Mill

Product Introduction

Product Introduction

Grinding media are a kind of carrier used in ball mills / SAG mills/tower mills in industries of Mining /Cement / Coal-fired power plants, etc, to help grinding & mill ore materials. grinding media shape most are balls, cylinders (cylinders), rods, and other special shapes. The materials for making such grinding media mostly are Alloy steel, manufacturing process one is casting with alloy material of high chrome (10-16% Cr), high chrome plus (17-22% Cr), high chrome ultra (23-28% Cr) and low chrome (1-8% Cr), another one is Forged  (hot-rolled) with B2/ B3/ BU/B6 alloy steel.

  • Core Features
  • Application Scenarios
  • Product Characteristics
  • Customization Options

Product Advantage

Lower consumption cost
Because high-chrome grinding balls have higher hardness and can be made with different chromium content (10-28%), this kind of grinding media consumption will be only 25%-65% of forged steel & lower chrome casting balls, which are used to Ball mill & tower mills. For some special minerals that have the highest hardness, such as Quartz sand, choose high chrome ultra (Cr: 23-28%) casting steel balls; the grinding media consumption cost will be much lower than other kinds of grinding media.

Higher hardness
High Chromium casting balls with special heat treatment processing (Oil quench & annealing) will have higher hardness than forged grinding balls. 10% Cr- Chromium casting ball, ball diameter size Φ10 - Φ70 mm, grinding ball hardness can be HRC 66, much higher than forging ball and low-chrome steel ball. And the ball surface & core hardness difference is less than HRC 1.

Customized alloy Steel composition
NGZR foundry can be followed customer’s requirement to readjust the Chemical Composition of Chromium alloy content (1.0-28%) and other metallic element , with special heat-treatment processing, that can make this casting steel ball got different thechnical paramenters, such as hardness / Impact Value / Breakage and de-shaping rate / micro- structure / high PH degree of acid or alkali resistant / high temperature resistance etc, to match customer’s diffent required.

Customized grinding media shape
NGZR can develop and make different shapes of grinding media, such as: Grinding ball (Sphere) / Grinding cylpebs ( Cylinder) / Grinding egg ( Ellipsoid) / Polyhedron Shape and other special customized shapes. Different shape grinding media will have better grinding effect with different grinding conditions.

Lower breakage & out-of-roundness rate
Depend oncontrolling raw material quality / advanced casting production equipment & special heat-treatment processing, the high chromium casting grinding ball product of NGZR has good Physical Property, large size casting balls have breakage & Out-of-roundness rate will be less than 1%; for small-size casting balls, breakage & out-of-roundness rates will be less than 0.5%.

Anhui Ningguo Zhongrui Wear-Resistant Materials Co., Ltd.

About Us

Anhui Province's Ningguo City Zhongrui Wear-resistant Materials Co., Ltd. is located in Ningguo City, which is known as the capital of wear-resistant castings in China. The company mainly produces high-chromium, medium-chromium, and low-chromium alloy cast balls, cast sections; ball mill liners; crusher guards, hammers, etc. It also has a casting ball workshop, casting workshop, white mold cutting workshop, heat treatment workshop, raw material workshop, finished product workshop, and physical property testing room.

The company is equipped with 2 fully automatic iron mold sand coating production lines, 4 mechanical arm shell molding machines, 1 fully automatic lost foam mold production line, 1 fully automatic heat treatment quenching + reheat treatment production line, 2 automatic flipping annealing furnaces, 3 sets of VIP-1800 series melting furnaces, cabinet-type PRO spectrometer, carbon-sulfur analyzer, hardness tester, far-infrared temperature measuring instrument, etc. The production and testing equipment is complete and comprehensive. Temperature-controlled melting, constant-temperature pouring, automatic temperature-controlled quenching, and annealing have been achieved, and many technologies are at the forefront of the industry.

The product specifications are complete, meeting the needs of customers for different materials of cast balls, cast sections, ball mill liners, crusher guards, hammers, etc., ranging from Ф8mm to Ф150mm. The company now has an annual production capacity of 60,000 tons of cast balls and castings.

In its development, the enterprise has always adhered to the development strategy of "using science and technology to build the enterprise" and "strengthening innovation to build the enterprise". It has continuously strengthened service awareness and quality awareness, and has successively obtained ISO9001 quality certification, ISO14001 environmental certification, ISO45001 occupational health and safety management certification; and has received many certificates such as "Safety Production Standardization". 

We adhere to the business philosophy of "trustworthiness as the foundation, integrity as the priority", requiring every employee to be honest in their conduct and diligent in their work, and to be responsible for producing high-quality and qualified products to increase production and efficiency for customers. We strive to become a century-old enterprise with high quality, strong quality, good reputation, and a beautiful environment.

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