Huashengming Double Roll Crusher: Add One Before the Ball Mill to Make “More Crushing, Less Grinding” a Reality

In the mineral processing industry, the ball mill is a major energy consumer, typically accounting for 40%–60% of a plant’s total power consumption. Many concentrators face the dilemma of low ball mill efficiency and high steel ball consumption. The root cause often lies not in the mill itself, but in the upstream crushing stage—coarse and uneven feed forces the ball mill to expend more energy on grinding.

More crushing, less grinding” is the core concept for energy saving and consumption reduction in modern mineral processing. By enhancing the fine crushing capacity at the crushing stage and reducing the feed size to the ball mill as much as possible, the mill load is significantly decreased. Studies show that for every 1mm reduction in feed size, grinding energy consumption decreases by 5%–8%. With its “squeeze crushing, low over-grinding” technical features, the Huashengming double roll crusher is becoming the preferred choice for more and more concentrators to install in front of the ball mill.

Gold Ore

Case Study: A Gold Mine in Henan – 10-30mm Feed → Below 8mm Discharge, Ball Mill Throughput Significantly Improved

A gold mine production line in Henan successfully installed a Huashengming double roll crusher in front of the ball mill to improve feed fineness and overall capacity.

Equipment Configuration: Double roll crusher + vibrating feeder (for uniform and stable feeding)

Motor Configuration: Dual 55kW motors + two Guomao 280 reducers

Feed Size: 10–30mm (1–3 cm)

Discharge Size: Controlled to below 8mm, significantly optimizing the ball mill feed

After commissioning, the ball mill throughput improved significantly, and the overall production line output and energy consumption ratio exceeded expectations. This modification fully validated the value of the “more crushing, less grinding” concept in actual production, and the customer gave high praise to the equipment’s performance and results.

Why Does the Double Roll Crusher Enable “More Crushing, Less Grinding”?

1. Precise and Adjustable Discharge Size, Reducing Ball Mill Feed

By adjusting the gap between the two rolls, the double roll crusher can reduce 10–30mm material to below 8mm or even finer. The uniform particle size and low over-grinding rate provide ideal feed conditions for the ball mill.

2. Low Energy Consumption, Significant Energy Savings

The double roll crusher operates on the low-speed interparticle crushing principle, with unit crushing power consumption far lower than that of the ball mill. Installing a roll crusher in front of the ball mill reduces the feed from 10–30mm to 1–5mm, greatly increasing the ball mill’s throughput.

3. Wear-Resistant and Durable, Low Maintenance Costs

Crushing Site

Huashengming roll crusher shells are made of high-chromium manganese steel wear-resistant material, alloyed with rare metals. The core “centrifugal composite roll shell” technology has been patented and is a domestic innovation. Under reasonable operating conditions, the average service life of the roll shells can reach over 2 years.

4. Capable of Crushing Both Dry and Wet Materials, Strong Adaptability

No strict requirements for material moisture; non-clogging and non-sticking. Widely applicable for fine crushing of various metallic ores, including gold ore, iron ore, molybdenum ore, copper ore, and more.

Installing a double roll crusher in front of the ball mill may seem like a small step upstream, but it can drive efficiency gains across the entire production system. With its “squeezing instead of impact” crushing concept, precisely controllable discharge size, and long roll shell life, Huashengming double roll crusher helps concentrators truly achieve “more crushing, less grinding” for cost reduction and efficiency improvement. For more product information or to request a customised solution, please visit the official Huashengming Heavy Industry website or contact the sales team directly.

Gongyi Huashengming Heavy Machinery Factory

Gongyi Huashengming Heavy Industry Machinery Factory is a production of crushing and screening equipment, production, sales as one of the large machinery intelligent manufacturing enterprises. Company headquarters is located in the Central Plains of the pearl Gongyi City, the main roller crusher equipment, mobile sand making equipment, screening equipment and construction waste treatment equipment series products, our company’s production site thousands of thousands, all over the provinces and cities. Over the years we have been consistent, honest service to every customer. We sincerely look forward to cooperating with you.