Coal gangue double tooth roll crusher

I. Why HSM Double Tooth Roll Crusher is Better for Coal & Stone Crushing?

When crushing coal, coal gangue, limestone and similar materials, traditional equipment often suffers from clogging, over‑crushing, and rapid tooth plate wear. HSM double tooth roll crusher adopts a low‑speed, high‑torque design, combining shearing, tensile and extrusion forces to break materials – especially effective for high‑moisture, high‑clay feed.

Key advantages:

Screening‑crushing integrated – material that already meets size requirements passes through directly, reducing over‑grinding and increasing yield.

Anti‑clogging & non‑sticking – forced discharge from the double rolls prevents blockage even with wet coal or coal slime.

Multiple overload protection – fluid coupling + electronic sensor; automatically reverses or stops when encountering tramp iron.

Hydraulic gap adjustment – output size flexibly adjustable from 3 to 100 mm to meet different process needs.

High capacity range – from 7 t/h up to 5,000 t/h; max feed size up to 1500 mm.

Coal gangue double tooth roll crusher

II. Application Cases

Case 1: Guizhou Coal Preparation Plant – Coal Gangue Recycling

Customer pain points:
Coal gangue stockpiling occupied space and needed to be crushed to ≤10 mm for jigging + magnetic separation to extract sulfur concentrate and aluminum‑silicon powder. The original hammer crusher frequently clogged, hammers wore out quickly, and the output size was unstable.

HSM solution:
Supplied 2PGC1210 double tooth roll crusher + 2PG1210 hydraulic roll crusher in two stages:

Primary crushing: feed ≤200 mm gangue → product ≤30 mm

Secondary crushing: 30 mm material → product ≤8 mm

Magnetic separator installed between stages, closed‑loop screening at the end

Coal gangue double tooth roll crusher at customer site

Results:

Stable capacity 80–100 t/h; over 90% of product <8 mm, meeting magnetic separation requirements

Roll teeth made of high‑wear‑resistant alloy steel; service life 8 months continuously (original equipment only 3 months)

Clogging completely eliminated; 500,000 tons of gangue processed annually, turning waste into profit

Case 2: Inner Mongolia Open‑pit Coal Mine – Raw Coal Primary Crushing in Winter

Customer pain points:
High dirt band content in raw coal, plus frozen lumps in winter. Standard tooth rolls could not handle frozen lumps, causing slipping and rapid tooth wear, severely affecting winter production.

HSM solution:
Provided 2PGC1500 large double tooth roll crusher with anti‑freezing combined teeth + hardfacing welded tooth plates, plus electric heating device to prevent material adhesion on rolls.

Results:

Feed ≤600 mm, product ≤150 mm, capacity 1,200 t/h

No frozen lump clogging at -25°C; equipment availability >95%

Stable operation over three major maintenance cycles; total crushed raw coal exceeds 8 million tons

Coal gangue double tooth roll crusher at crushing site

III. Why Customers Keep Choosing HSM?

True dual‑purpose design – from soft coal to medium‑hard limestone, shale, coal gangue – one machine handles it all.

Low operating cost – high‑chromium alloy + hardfacing welded tooth plates last 1.5‑2 times longer than competitors; low‑speed design reduces bearing wear.

Fast service response – service points in major mining areas; spare parts response within 24 hours, on‑site within 48 hours.

Turnkey solutions – from single machine to complete crushing & screening line; free material testing available.

IV. Contact Us

If you are looking for a clog‑resistant, high‑efficiency double tooth roll crusher for coal gangue, raw coal, limestone or similar materials, please contact HSM Heavy Machinery.

Website: www.hsmcrusher.com

Hotline: +86 18703839693

HSM – Making crushing simpler and operation more reliable.