Cast High Chrome Balls
Molycop's range of cast high chrome grinding media includes a wide range of ball sizes and chrome levels that can be optimised for specific grinding applications.
Make an EnquiryProduct Features
- Size: Cast high chrome balls are available in 13mm to 110mm diameter sizes.
- Weight: Cast high chrome balls are available in weights from 7g to 6.208kg.
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Product Overview
Molycop’s cast high chrome grinding media have been designed for fine and dry grinding applications across a broad range of milling environments and applications.Cast high chrome products are available in a full range of sizes and chrome levels that can be optimised for milling outcomes. Advanced manufacturing techniques and adherence to tightly controlled alloy chemistries ensure Molycop customers receive a consistently high-quality product.
Technical Services
Pulp Chemistry Surveys
- Monitor plant response to the grinding media choice.
- Measure pH, Eh, dissolved oxygen, conductivity and temperature profiles.
- Quarterly or bi-annual review to provide metallurgical feedback.
Alloy Scoping Tests
- Assist to select the optimal chrome specific to the ore type.
- Our laboratories can perform grindability and flotation tests.
- Ore mineralogy, hardness, abrasiveness and other plant conditions considered.
Reagent Optimisation
- Molycop Chemicals team can review current reagent regime.
- Laboratory tests to investigate optimal addition rates.
- Reagent recommendations specific to optimal grinding media selected.
Product Typical Uses
Mining applications
Cast high chrome grinding media have been designed to effectively liberate a wide variety of minerals including gold, silver, lead, zinc, copper and iron during the comminution process.The chemistries have been designed for use in mining applications to ensure optimal product performance. Molycop can supply product with chrome levels ranging from 9–31% based on customers’ requirements:
- Primary/secondary ball milling: Cast high chrome media with lower wear speed rates that offer a longer-lasting product to liberate the desired minerals from crushed ore.
- Regrind/fine grinding: Smaller ball sizes that can be used for fine or regrind applications.
Cement applications
Cast high chrome grinding media offers optimal performance for the dry grinding of limestone and cement in all types of ball milling common to the cement industry. The product is typically tempered for dry cement applications:- Finish milling: Product can be designed to effectively grind clinker in dual or mono chamber cement mills. Optimised ball charges can ensure proper grinding efficiency to fully use mill power to produce the required Blaine.
- Raw milling: Cast high chrome grinding media offers a longer lasting ball for dry or wet raw milling of the kiln feed material.
- Coal milling: Corrosive grinding conditions in milling of fuel materials for the kiln can be better handled by Molycop’s more durable cast high chrome grinding media.
Product Benefits
Molycop’s cast high chrome balls:- can be used in a broad range of milling environments and applications
- liberate minerals including gold, silver, lead, zinc, copper and iron
- are available in a range of ball sizes and chrome levels that can be adjusted to various milling environments
Technical Data
| Product Code | Cr | Mn | Si | C | Mo | ||||||||
| Min. | Max. | Min. | Max. | Min. | Max. | Min. | Max. | Min. | Max. | ||||
| MCCR 10 | 9 | 11 | 0.3 | 1.5 | 0.3 | 1.3 | 2.0 | 3.5 | 0.00 | 0.15 | |||
| MCCR 12 | 11 | 13 | 0.3 | 1.5 | 0.3 | 1.3 | 2.0 | 3.5 | 0.00 | 0.15 | |||
| MCCR 15 | 14 | 16 | 0.3 | 1.5 | 0.3 | 1.3 | 2.0 | 3.5 | 0.00 | 0.15 | |||
| MCCR 18 | 17 | 19 | 0.3 | 1.5 | 0.3 | 1.3 | 2.0 | 3.5 | 0.00 | 0.15 | |||
| MCCR 21 | 20 | 22 | 0.3 | 1.5 | 0.3 | 1.3 | 2.0 | 3.5 | 0.00 | 0.15 | |||
| MCCR 24 | 23 | 25 | 0.3 | 1.5 | 0.3 | 1.3 | 2.0 | 3.5 | 0.00 | 0.15 | |||
| MCCR 27 | 26 | 28 | 0.3 | 1.5 | 0.3 | 1.3 | 2.0 | 3.5 | 0.00 | 0.15 | |||
| MCCR 30 | 29 | 31 | 0.3 | 1.5 | 0.3 | 1.3 | 2.0 | 3.5 | 0.00 | 0.15 | |||
| S Max (0.1) | P Max (0.1) | ||||||||||||
| (mm) | Min. (kg) | Max. (kg) | ||
| 13 | 0.007 | 0.009 | ||
| 15 | 0.010 | 0.015 | ||
| 17 | 0.016 | 0.027 | ||
| 20 | 0.029 | 0.039 | ||
| 25 | 0.054 | 0.083 | ||
| 30 | 0.092 | 0.137 | ||
| 40 | 0.227 | 0.305 | ||
| 50 | 0.454 | 0.576 | ||
| 60 | 0.785 | 0.971 | ||
| 65 | 1.018 | 1.223 | ||
| 70 | 1.278 | 1.655 | ||
| 80 | 1.924 | 2.345 | ||
| 90 | 2.755 | 3.314 | ||
| 100 | 4.002 | 4.737 | ||
| 110 | 5.378 | 6.208 | ||
| Ball Diameter (mm) | Min | Max | ||
| 13 – 110 | 58 | 69 | ||
| The above is intended as a guide only. Individual ball hardness readings may fall outside the range listed above. | ||||
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