350,000 T/Y Blast Furnace Slag Micro-powder Production Line in Guangxi

Core Equipment：CRLM Vertical Mill

Processed Materials：Blast Furnace Slag（≤10mm）

Production Output：50t/h

Powder Fineness：325 mesh（S95）

Customer Feedback

Cronus Machinery provided professional, full-process services from solution design to installation and commissioning, offering solid assurance for the project's successful launch. The finished powder maintains a stable specific surface area above 450 m²/kg, fully complying with the S95 grade standard.

—— Cronus Machine Customer

Project Overview

A green building materials company under a large steel group in Guangxi, leveraging its own blast furnace slag resources, decided to build an energy-efficient and environmentally friendly large-scale slag micro-powder production line. The core objective of the project is the large-scale, stable production of high-quality S95 grade and above slag powder to replace traditional cement clinker. After comprehensive technical demonstration, the client ultimately selected Cronus Machinery's integrated CRLM Large Vertical Mill system solution, which combines drying, grinding, and classification.

Cronus technical team designing the CRLM Vertical Mill project solution for Guangxi

Project Details

Blast Furnace Slag → Raw Material Shed → Drying System → Enclosed Batch Feeder → Vertical Mill

Blast furnace slag undergoes pre-homogenization in the raw material shed, followed by moisture reduction via the drying system. It is then fed into the CRLM Vertical Mill via the enclosed batch feeder for grinding and pulverization, while hot air is used to further dry the material. The ground slag powder undergoes precise classification via the classifier. Unqualified coarse slag powder is returned for re-grinding, while qualified 325 mesh slag micro-powder is carried out with the airflow, ensuring the finished product's specific surface area stably reaches 450 m²/kg.

Dust Collection System → Slag Micro-powder

Subsequently, the qualified slag micro-powder is separated and collected by the dust collection system.

Main Equipment	Function Description
Drying System	Ensures feed material moisture content ≤1%
Enclosed Batch Feeder	Feeds material into the vertical mill precisely, continuously, and in a sealed manner
CRLM Vertical Mill	Grinds blast furnace slag (≤10mm) into slag micro-powder with a fineness of 325 mesh and a stable specific surface area ≥450 m²/kg
Dust Collection System	Separates and collects slag micro-powder and purifies excess dust

Project Advantages

Excellent Quality: Through precise drying and classification control, the CRLM Vertical Mill ensures the finished slag micro-powder stably meets the dual indicators of fineness (325 mesh) and high specific surface area (≥450 m²/kg). The product exhibits excellent activity, fully complying with S95 grade standards.

High Efficiency and Energy Saving: Utilizing hot air for cooperative drying achieves high thermal energy efficiency. The overall system power consumption is approximately 35% lower compared to traditional "dryer + ball mill" processes.

Economical and Eco-Friendly: Successfully transforms industrial solid waste into high-value-added green building materials, not only creating direct economic benefits but also aligning with the direction of circular economic development.

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