The mining industry is the foundation of modern industry, and no industry can do without it. So, as a crushing equipment in the mining industry, which materials is the mineral sizer suitable for? Through in-depth research on the common materials in the current industry, we have found that the mineral sizer is particularly suitable for medium-hard materials that require less powder, such as coal, gypsum, potash fertilizer, nickel ore, bauxite, topsoil (overburden), etc.
Mineral sizer Features：
The Mineral sizer is a modern low-speed, high-torque double-toothed roller crusher. Its main working principle is to shear and stretch the material by the counter-rotating toothed rollers to cut the material rather than the traditional impact. The advantages of this are large processing capacity, uniform product particle size, low impurity rate, and good economic benefits.
This crushing mechanism ingeniously utilizes the inherent characteristics of most rock materials, that is, their compressive strength is much greater than their shear strength, and their shear strength is much greater than their tensile strength (compressive strength > shear strength > tensile strength). Therefore, the Sizer can effectively crush the material with lower energy input by applying shear and tensile stress.
This principle fundamentally differs from the jaw and gyratory crushers that mainly rely on high-intensity compression, as well as the impact and hammer crushers that rely on high-speed impact energy. According to the particle size of the processed material, the Sizer can be divided into primary crushers for processing raw ore from the mining site and secondary crushers for the second stage of crushing. Statistical table of compressive strength of materials for Mineral sizer:

Material (EN)	物料（中文）	Typical UCS (MPa)	Evidence Grade	Sizer Suitability
Coal (ROM / Thermal / Coking)	煤（原煤/动力煤/焦煤）	5–35	A	Excellent
Lignite	褐煤	2–15	A	Excellent
Oil Shale	油页岩	15–60	A	Good
Shale	页岩	10–80	A	Good
Claystone / Mudstone	黏土岩/泥岩	5–50	A	Excellent
Marl	泥灰岩	10–50	B	Excellent
Limestone (soft-medium)	石灰石（软-中硬）	30–120	A	Excellent
Dolomite	白云岩	50–150	A	Good
Gypsum	石膏	5–30	A	Excellent
Phosphate Rock	磷矿石	20–100	B	Good
Potash Ore / Sylvinite	钾盐矿	5–25	A	Excellent
Rock Salt / Halite	岩盐	20–40	A	Excellent
Trona / Soda Ash Ore	天然碱矿	10–35	B	Excellent
Bauxite	铝土矿	20–120	B	Good
Lateritic Nickel Ore (Limonite)	红土镍矿（褐铁型）	5–40	B	Excellent
Lateritic Nickel Ore (Saprolite)	红土镍矿（腐殖型）	15–80	B	Good
Weathered Iron Ore / Limonite	风化铁矿/褐铁矿	20–100	B	Good
Soft Hematite Ore	软质赤铁矿	40–120	C	Conditional
Hard Hematite Ore	硬质赤铁矿	120–250	C	Poor-Conditional
Magnetite Ore	磁铁矿	150–300	C	Poor
Manganese Ore (soft-weathered)	锰矿（软质/风化）	20–100	B	Good
Chromite Ore	铬铁矿	150–300	C	Poor
Copper Oxide Ore (weathered)	氧化铜矿（风化）	20–100	B	Good
Copper Sulfide Ore	硫化铜矿	80–220	C	Conditional
Porphyry Copper Ore	斑岩铜矿	80–250	C	Conditional
Lead-Zinc Ore (soft-medium)	铅锌矿（软-中硬）	40–180	C	Conditional
Gold Ore (weathered oxide)	金矿（风化氧化矿）	20–120	B	Good
Gold Ore (fresh hard rock)	金矿（原生硬岩）	100–250	C	Conditional
Silver Ore	银矿石	60–200	C	Conditional
Uranium Ore (sandstone-hosted)	铀矿（砂岩型）	20–100	B	Good
Uranium Ore (hard rock)	铀矿（硬岩型）	80–220	C	Conditional
Sandstone	砂岩	40–180	A	Conditional
Siltstone	粉砂岩	20–100	A	Good
Conglomerate (weakly cemented)	砾岩（弱胶结）	20–120	B	Conditional
Basalt	玄武岩	150–350	C	Poor
Granite	花岗岩	100–250	C	Poor
Quartzite	石英岩	150–300	C	Poor
Clay (wet, plastic)	湿黏土（塑性）	0.5–5	B	Excellent
Kaolin / China Clay	高岭土	1–10	B	Excellent
Bentonite	膨润土	0.5–5	B	Good
Laterite (non-nickel)	红土（非镍）	5–40	B	Excellent
Gypsiferous Clay	含石膏黏土	1–15	B	Excellent
Marl with Clay	含黏土泥灰岩	5–30	B	Excellent
Soft Marl-Limestone Mix	软质泥灰岩-石灰石混合料	10–60	B	Excellent
Overburden (mixed soft rock + clay)	覆盖层（软岩+黏土混合）	1–50	B	Excellent
Rejects / ROM Mixed Feed	混合原矿/弃料	Variable	B	Excellent
Cement Raw Mix	水泥生料混合料	5–50	B	Excellent
Coal Gangue (soft-medium)	煤矸石（软-中硬）	20–120	B	Good
Weathered Mixed Ore	风化混合矿	10–80	B	Excellent
Soft Industrial Minerals (generic)	软质工业矿物（通用）	5–80	B	Excellent

Mineral Sizer Selection Decision Framework:
1.Primary Evaluation: Compressive Strength of Material (UCS)
< 100 MPa: Sizer is the prime candidate. It offers comprehensive performance advantages and good economy.

100 - 200 MPa: Sizer is a strong contender. A detailed technical and economic comparison with traditional solutions (jaw crusher/cone crusher) is required.

200 - 250 MPa: Sizer is a niche solution. It should be prioritized only when there are specific pain points (such as clogging) that traditional equipment cannot address.

> 250 MPa: Beyond the conventional economic application range of Sizer. Not recommended.

2.Key Considerations: Moisture, clay content, and stickiness.
This is a "veto/plus" item. Regardless of the UCS, if the material has a significant risk of clogging and sticking, the priority of Sizer selection should be significantly increased. Evaluation indicators include: moisture content (%), plasticity index, clay mineral content, etc.

3.Secondary factors: Abrasiveness, feed size, production capacity requirements
Abrasion: It is evaluated through mineralogical analysis (such as quartz content) or abrasion index tests. High abrasion can significantly increase the operating cost of the Sizer and is a core variable in economic analysis.

Feed size and capacity:

Clearly define the maximum feed size and hourly processing capacity requirements of the mine, and select the corresponding Sizer model.

Product particle size requirements: The Sizer can provide good control of the maximum particle size, but if there are special requirements for the product particle shape (such as cubic), other equipment may need to be considered.

4.Economic analysis: Life Cycle Cost (LCC) comparison
Comprehensively compare different schemes in terms of:

Capital Expenditure (CAPEX): Equipment purchase, installation, and civil construction costs.

Operating Expenditure (OPEX):

Energy consumption, spare parts (wear and tear parts), maintenance labor, downtime losses, etc.

The final decision should be based on the scheme with the lowest LCC, rather than merely the one with the lowest initial investment.

As a technologically advanced and highly adaptable crushing device, the Mineral Sizer has taken an indispensable position in modern mining.

By deeply understanding its performance based on the compressive strength of materials and other key characteristics, mining companies can make more informed equipment selection decisions, thereby achieving more efficient, economical and environmentally friendly mineral processing procedures.