Dolomite Twin-Roll Breaker for Metallurgical Flux

What Is Dolomite Twin-Roll Breaker for Metallurgical Flux？

Dolomite Twin-Roll Breaker for Metallurgical Flux is a dual-roll compression crushing device specifically designed for metallurgical flux preparation. Dolomite serves as a basic flux in steelmaking, used to adjust slag basicity and remove sulfur and phosphorus impurities from molten steel. According to Indian Standard IS 10346:2004, metallurgical-grade dolomite must contain no less than 19% magnesium oxide and no more than 3% silicon dioxide, with a particle size requirement of 0 to 80 millimeters. The equipment reduces raw dolomite to the required flux particle sizes, producing minimal over-crushed fines and delivering better particle size uniformity than impact crushers.

Dolomite Twin-Roll Breaker for Metallurgical Flux Video Showcase

How Does Dolomite Twin-Roll Breaker for Metallurgical Flux Work？

Dolomite twin-roll breaker for metallurgical flux applies compression and shear forces to materials through two counter-rotating, high-strength roller shafts. Material enters the V-shaped chamber between the rollers, where brittle particles fracture along cleavage planes and discharge through the roller gap. Output particle size is precisely controlled by adjusting the roller gap, with a range of 1 to 60 millimeters. When an unbreakable object enters, the movable roller retreats under spring or hydraulic pressure to allow passage, then automatically returns to position. The equipment supports modular customization, allowing flexible configuration of roller surface types and tooth profiles based on material characteristics and operating conditions.

Dolomite Twin-Roll Breaker for Metallurgical Flux Technical Specifications

Dolomite twin-roll breaker for metallurgical flux is primarily available in the 2PG series, with roller diameters ranging from 400mm to 1500mm and processing capacities from 2 to 140 tons per hour. The table below shows industry-standard technical parameters for each model.

Model	Roller Dia.×Width mm	Max Feed mm	Output Size mm	Capacity t/h	Motor Power kW	Weight kg
2PG400×250	400×250	≤35	1-8	2-10	5.5×2	1300
2PG610×400	610×400	≤65	2-20	5-20	15×2	3900
2PG750×500	750×500	≤75	2-25	10-40	18.5×2	9500
2PG800×600	800×600	≤80	2-25	12-45	22×2	10800
2PG900×900	900×900	≤65	1-50	20-70	37×2	16800
2PG1000×700	1000×700	≤100	3-30	20-65	30×2	14900
2PG1200×800	1200×800	≤120	3-35	35-80	37×2	25500
2PG1500×800	1500×800	≤130	3-45	50-120	75×2	33700

Maximum feed size is approximately 15% to 40% of the roller diameter. Smooth roller surfaces are suitable for fine crushing, while welded carbide roller surfaces are suitable for medium crushing.

Key Advantages of Dolomite Twin-Roll Breaker for Metallurgical Flux

In metallurgical flux preparation applications, this equipment offers greater particle size control precision than impact crushers.

Output is precisely controllable with an over-crushing rate below 3% and roller gap adjustment accuracy of 0.3mm. It handles materials with up to 15% moisture content without blockage-related downtime within this range. Energy consumption is 2.3 kWh per ton of material, which is 74% lower than hammer crushers. When integrated into a grinding system, it can increase throughput by 30% to 40% while reducing overall energy consumption by 20% to 30%. Roller surfaces are made of high-chromium and high-manganese wear-resistant alloys with an average service life of over 2 years. An intelligent overload protection system automatically increases the roller gap when tramp metal enters, then resets afterward. Labyrinth seals combined with splash guards keep dust concentration below 10 milligrams per cubic meter at the site. Under continuous operation, annual runtime is approximately 240 hours more than impact crushers.

Purchase Information for Dolomite Twin-Roll Breaker for Metallurgical Flux

MACHRISE offers factory-direct pricing for the Dolomite Twin-Roll Breaker for Metallurgical Flux. Standard models are available with flexible trade terms and fast delivery.

MOQ: 1 set (standard model)

Price Terms: FOB Qingdao / CIF / EXW

Lead Time: Standard models within 20 days; customized models 25–35 working days after deposit

Payment: T/T, L/C, D/P

Sample / Material Test: Available with customer’s dolomite sample

Customization: Roller gap, tooth profile, voltage, color, and capacity configuration

After-sales: Remote commissioning, on-site support, and regular follow-up

Get a factory-direct quote for Dolomite Twin-Roll Breaker for Metallurgical Flux

Tooth Profile Configurations for Dolomite Twin-Roll Breaker for Metallurgical Flux

The equipment accommodates six tooth profile types, each with different strengths in biting force, penetration, wear resistance, and self-cleaning capability.

Straight teeth are suitable for conventional crushing of medium-hardness materials such as dolomite. Square wave teeth have a wider face and are suitable for high reduction ratio applications. Wolf teeth provide strong biting force and are suitable for coarse crushing with feed sizes exceeding 100mm. Heavy-duty wolf teeth offer approximately 25% longer service life than standard wolf teeth when processing materials with hardness above 150 MPa. Sharp wave teeth apply precise shear force and are suitable for fine crushing with output sizes below 3mm. Diamond teeth demonstrate superior self-cleaning performance compared to other profiles when processing materials with moisture content above 10%, reducing roller surface adhesion.

Operational Data & Field Case Study for Dolomite Twin-Roll Breaker for Metallurgical Flux

Field Case Study: Dolomite Twin-Roll Breaker for Metallurgical Flux in Steelmaking Flux Preparation

Project: A ferroalloy plant in East China purchased one 2PG900×900 Dolomite Twin-Roll Breaker for Metallurgical Flux in 2025. Feed material: dolomite, 40–60 mm. Required output: 3–8 mm for steelmaking flux.

Results after six months: average capacity 42–48 t/h; qualified output rate 96.2%; roller surface wear 1.1 mm; energy consumption 2.3 kWh/t. The plant replaced a hammer crusher because over-crushing generated too many fines. After switching to twin-roll compression, the fines rate dropped from about 12% to below 3%.

Customer feedback: “The particle size uniformity is much better than our previous hammer crusher, and the dust and fines have been significantly reduced.”

Dolomite Processing (2PG900×900)

Dolomite processing: With feed size of 40 to 60mm and output requirement of 3 to 8mm, average processing capacity ranges from 42 to 48 tons per hour. When moisture content ranges from 12% to 15%, capacity decreases by approximately 8% while output particle size distribution remains largely unchanged. Energy consumption is 2.3 kWh per ton, compared to 8.4 kWh per ton for hammer crushers. Roller surface wear averages 2.1mm after 12 months of operation, and can be restored through hardfacing repair. The main structure has a design life exceeding 10 years. When moisture content exceeds 12%, switching the tooth profile from straight teeth to diamond teeth reduces cleaning frequency from once per week to once every two weeks.

Limestone Processing (2PG750×500)

Limestone processing: The 2PG750×500 model processes feed material of 30 to 40mm with output of 2 to 5mm, achieving a qualified output rate of approximately 95%, with roller wear of 1.8mm after 18 months of operation. Straight teeth perform optimally when moisture content remains below 5%.

Slag Processing (2PG900×1200)

Slag processing: The 2PG900×1200 model processes feed material of 50 to 60mm with output of 8 to 15mm, achieving processing capacity of 80 to 85 tons per hour with an over-crushing rate below 4%. Wolf teeth demonstrate a clear advantage in biting force, with heavy-duty wolf teeth providing approximately 25% longer service life than standard wolf teeth.

Dolomite processing: With feed size of 40 to 60mm and output requirement of 3 to 8mm, average processing capacity ranges from 42 to 48 tons per hour. When moisture content ranges from 12% to 15%, capacity decreases by approximately 8% while output particle size distribution remains largely unchanged. Energy consumption is 2.3 kWh per ton, compared to 8.4 kWh per ton for hammer crushers. Roller surface wear averages 2.1mm after 12 months of operation, and can be restored through hardfacing repair. The main structure has a design life exceeding 10 years. When moisture content exceeds 12%, switching the tooth profile from straight teeth to diamond teeth reduces cleaning frequency from once per week to once every two weeks.

Limestone processing: The 2PG750×500 model processes feed material of 30 to 40mm with output of 2 to 5mm, achieving a product qualified output rate of approximately 95%, with roller wear of 1.8mm after 18 months of operation. Straight teeth perform optimally when moisture content remains below 5%.

Slag processing: The 2PG900×1200 model processes feed material of 50 to 60mm with output of 8 to 15mm, achieving processing capacity of 80 to 85 tons per hour with an over-crushing rate below 4%. Wolf teeth demonstrate a clear advantage in biting force, with heavy-duty wolf teeth providing approximately 25% longer service life than standard wolf teeth.

Applicable Materials for Dolomite Twin-Roll Breaker for Metallurgical Flux

The equipment processes various medium-hardness materials with compressive strength below 250 MPa, with applications concentrated in four main categories.

Dolomite: Crushed to 3 to 8mm for flux applications or 8 to 15mm for refractory applications.

Limestone: Crushed to slag-forming particle sizes for desulfurization and dephosphorization in steelmaking.

Metallurgical slag and coal: Including blast furnace slag, steel slag, and metallurgical coke, crushed to construction aggregate or cement additive particle sizes.

Other medium-hardness materials: Iron ore, quartz stone, cement clinker, coal gangue, shale, clay, and similar materials.

Twin-Roll Breaker vs. Hammer Crusher for Dolomite Flux

Item	Dolomite Twin-Roll Breaker	Hammer Crusher
Over-crushing rate	Below 3%	About 12%
Output 3–8 mm share	About 92%	About 75%
Energy consumption	2.3 kWh/t	8.4 kWh/t
Particle size uniformity	High	Medium

Common Selection Mistakes When Buying a Dolomite Twin-Roll Breaker for Metallurgical Flux

Many buyers focus only on capacity and price, but maximum feed size should be 15%–40% of roller diameter. For the 2PG900×900, max feed is ≤65 mm. Feeding larger dolomite can accelerate roller wear and cause uneven output.

If moisture is above 12%, choose diamond teeth instead of straight teeth. This reduces cleaning frequency from once per week to once every two weeks.

The equipment has passed multiple quality standard certifications.

About MACHRISE as a Manufacturer

MACHRISE is an industrial equipment supplier with full-chain manufacturing capabilities from roller surface casting to complete assembly. Its equipment serves over 60 application areas across more than 80 countries and regions, offering full-process industrial solutions covering crushing, screening, conveying, mixing, metallurgy, and packaging.

The equipment has passed multiple quality standard certifications. In high-temperature and high-humidity conditions across Southeast Asia and the Middle East, average mean time between failures exceeds 8,000 hours. The company supports L/C, T/T, and D/P payment methods, with standard models delivering within 20 days. Equipment comes with warranty coverage, maintenance support, and regular follow-up calls. All equipment supports modular customization.

Frequently Asked Questions About Dolomite Twin-Roll Breaker for Metallurgical Flux

How long is the roller surface service life for Dolomite twin-roll breaker for metallurgical flux?

High-chromium and high-manganese wear-resistant alloy roller surfaces have an average service life of over 2 years, depending on material abrasiveness.

What are the foundation dimensions for Dolomite twin-roll breaker for metallurgical flux?

The 2PG900 series requires a footprint of 4 meters long by 3 meters wide, with overhead clearance of at least 3.5 meters for maintenance access and 1.5 meters of operating clearance on each side.

What is the energy consumption of Dolomite twin-roll breaker for metallurgical flux?

Energy consumption is approximately 2.3 kWh per ton, which is 74% lower than hammer crushers.

Can Dolomite twin-roll breaker for metallurgical flux operate in high-temperature and high-humidity environments?

The equipment has an IP54 protection rating, with weatherproof motors and control cabinets, allowing operation outdoors and in high-temperature, high-humidity conditions.