Liming Heavy Industry MTW European Trapezium Mill: The Core Engine for Enhancing Quality and Efficiency in High-calcium Stone Processing

High-calcium Stone: A Natural Mineral Treasure Empowering Multiple Fields

High-calcium stone is a natural mineral primarily composed of elements such as calcium, silicon and oxygen. It boasts an extensive application scope, covering multiple fields including construction, decoration, pharmaceuticals, food and cosmetics. Owing to its characteristics of hardness, durability and resistance to damage, high-calcium stone plays an important role in the construction field and is widely used in building components like exterior walls, floors and steps.

Applications of High-calcium Stone Powder

Construction Field

High-calcium stone features exceptional hardness and strength, making it widely used in the production of construction materials such as cement, bricks, lime and concrete. In addition, it can also serve as a material for building exterior walls, and is highly acclaimed for its naturally appealing appearance, weather resistance and freeze resistance.

Chemical Industry Field

High-calcium stone can be used as a raw material to produce various calcium compounds, such as calcium carbonate and calcium hydroxide. Meanwhile, it also acts as a raw material for chemical reactions and is applied in sewage treatment. High-calcium stone powder can precipitate excess metal ions like chlorine and aluminum in water, thereby purifying water quality.

Agricultural Field

High-calcium stone can neutralize soil acidity and increase soil alkalinity, thus improving soil fertility and crop yield. In agriculture, it is commonly used as a soil amendment to optimize soil structure and promote plant growth and development.

Daily Chemical Field

High-calcium stone serves as a filler in cosmetics, and is added to various products including moisturizing powder, beauty powder and talcum powder. It can regulate the pH value of the skin and leave the skin looking smoother. Additionally, it is also one of the fillers used in toothpaste production.

Requirements for the fineness and purity of high-calcium stone powder vary across different fields. The precision and efficiency of the grinding process are the key determinants of whether the full value of high-calcium stone can be unlocked. Liming Heavy Industry’s MTW European Trapezium Mill integrates multiple core advantages, and serves as the core engine driving the high-end development of the calcium industry.

Project Overview: Boosting Quality and Efficiency for White Cement Production Bases

At a large-scale modern white cement production base in Central China, high-calcium stone exerts its core value through precision processing. As a key raw material for white cement manufacturing, the fineness, purity and stability of high-calcium stone powder directly determine the quality grade of the final product. With nearly 40 years of R&D experience in powder grinding equipment, Liming Heavy Industry has customized a powder production line centered on the MTW European Trapezium Mill for this base.

Material: High-calcium stone

Fineness: 325 mesh

Application: Building materials

Equipment: Two sets of Liming Heavy Industry MTW European Trapezium Mills

The equipment adopted for this project is Liming Heavy Industry’s MTW European Trapezium Mill, which processes high-calcium stone for primary application in building materials production. Since the project was put into operation, the equipment has maintained stable operation and delivered outstanding performance characterized by high capacity and low energy consumption. It continuously produces high-quality powder products, significantly improves overall production efficiency, fully meets the project’s production requirements, and has won high recognition from the customer.

MTW European Trapezium Mill: The Key Engine for High-calcium Stone Grinding

Drawing on nearly 40 years of R&D and manufacturing experience, Liming Heavy Industry has launched the MTW European Trapezium Mill tailored for high-calcium stone grinding. Boasting multiple core advantages and adopting innovative grinding technology, the equipment has achieved breakthroughs in various aspects including the transmission system, lubrication system, air duct design, roller and ring structure, finished product fineness control and powder classification system, air intake volute design as well as the intelligent control system. It truly realizes efficient, stable, energy-saving and intelligent powder processing.

Technological Iteration, Mature and Stable Equipment

With nearly 40 years of mill manufacturing experience, Liming Heavy Industry has rolled out four generations of upgraded grinding mills, boasting leading-edge technologies and stable equipment operation.

Special Grinding Design for High Efficiency

The curved shovel design is adopted to expand the material grinding contact area and improve grinding efficiency.

Bevel Gear Integrated Transmission for Lower Energy Consumption

The integrated bevel gear transmission and resistance-free air intake volute design ensure better material fluidity and lower energy consumption.

Thin Oil Lubrication to Extend Bearing Service Life

Both the main shaft transmission system and the fan transmission system of the equipment adopt thin oil lubrication. Compared with the traditional grease lubrication, it features smaller lubrication resistance and lower oil temperature, which can effectively extend the bearing service life.

New Variable-Frequency Powder Classifier for High Precision Finished Products

The new suspended cage-type powder classifier with variable-frequency control is employed, allowing adjustable and controllable fineness to meet the requirements of various particle size specifications.

Cost-Effective Investment with Environmental Friendliness

It occupies a small floor area with a simple structural layout. The entire system operates under negative pressure without dust emission, fully complying with the latest national environmental protection standards.

MTW European Trapezium Mill Powder Grinding Process

Raw materials are uniformly, quantitatively and continuously fed into the grinding chamber of the main machine by a variable-frequency belt feeder for grinding. The ground materials are conveyed to the powder classifier by the airflow of the fan for classification. Under the action of the classifier, materials that do not meet the fineness requirements fall back into the grinding chamber for regrinding, while qualified materials are carried by the airflow through the pipeline into the cyclone powder collector for separation and collection. The finished powder is discharged via the discharge device. The separated airflow returns to the fan through the air return pipe at the upper end of the cyclone powder collector. The entire production system operates under negative pressure and airtight conditions, equipped with a pulse dust collector to prevent dust emission, fully complying with national environmental protection standards.

From natural ore to an industrial treasure, the value leap of high-calcium stone cannot be achieved without precise and efficient powder grinding processes. Liming Heavy Industry drives progress with technological innovation and pursues excellence with craftsmanship. In the future, Liming Heavy Industry will continue to take technological innovation as its core driving force, conduct in-depth collaboration with more calcium industry enterprises, explore unlimited possibilities in the field of high-end powder manufacturing, and jointly promote the industry to a new stage of higher-quality development.