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  • GM-2: High Chromium Cast Grinding Cylpebs for Cement & Mining Ball Mill
  • GM-2: High Chromium Cast Grinding Cylpebs for Cement & Mining Ball Mill
  • GM-2: High Chromium Cast Grinding Cylpebs for Cement & Mining Ball Mill
  • GM-2: High Chromium Cast Grinding Cylpebs for Cement & Mining Ball Mill
  • GM-2: High Chromium Cast Grinding Cylpebs for Cement & Mining Ball Mill
  • GM-2: High Chromium Cast Grinding Cylpebs for Cement & Mining Ball Mill
  • GM-2: High Chromium Cast Grinding Cylpebs for Cement & Mining Ball Mill
  • GM-2: High Chromium Cast Grinding Cylpebs for Cement & Mining Ball Mill
  • GM-2: High Chromium Cast Grinding Cylpebs for Cement & Mining Ball Mill
  • GM-2: High Chromium Cast Grinding Cylpebs for Cement & Mining Ball Mill
  • GM-2: High Chromium Cast Grinding Cylpebs for Cement & Mining Ball Mill
  • GM-2: High Chromium Cast Grinding Cylpebs for Cement & Mining Ball Mill

GM-2: High Chromium Cast Grinding Cylpebs for Cement & Mining Ball Mill

Product Introduction

Product Introduction

Grinding media cylinders (cylinders) are a kind of media /carrier be used in ball mills in industries of Mining /Cement / AAC (Autoclaved aerated concrete blocks) plants, etc., to help crush & mill ore and sand. The grinding media cylinders' shape is cylindrical. This shape's grinding efficiency is better than small balls. The grinding media materials are made of chromium alloy steel; chromium alloy material can be: high chrome (10-17% Cr) , super chrome (17-22% Cr), Top chrome (23-28% Cr), and low chrome (1-8% Cr). Top chrome grinding media will be the best choice for high hardness mineral such as Lead-Zinc ore and Quartz sand.

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

Product Advantage

Lower consumption cost
Because the high chromium grinding cylinders have higher hardness than forged steel cylinders 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 cylinders, which are used to Ball mill. For some special minerals that have the highest hardness, such as Quartz sand, choose Top chromium (Cr: 23-28%) cast grinding media; the media consumption cost will be much less than other kinds of grinding media.

Higher hardness
High Chrome cast grinding media steel cylinders processed with special heat treatment (Oil quench & annealing) will have the highest hardness ( HRC 64- 66). Small-size Φ6*6 - Φ30*35 mm casting cylinder hardness can be HRC 66, and Φ30*35 - Φ55*60 mm cast cylinders hardness can be made to HRC64; it’s the highest hardness compared to other kinds of material grinding media. And this cast high chrome cylinders surface & core hardness difference is less than HRC 2.

Customized alloy Steel composition
NGZR foundry can match customer’s required to readjust the Chemical Composition of Chromium content (1.0-30%) and other usdful alloying element such as C /Mn/ Si/ Cu/ Ni/ Mo etc, with special heat-treatment processing, which can make this casting grinding cylinders get 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 special requirements.

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
Depending on controlling raw material quality / advanced casting production equipment & special heat-treatment processing, the high chrome grinding cylinders product of NGZR has good Physical Property, large size cast grinding media breakage & Out-of-roundness rate will be less than 1%; small-size casting ball breakage & Out-of-roundness rate 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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