Slag Dryer

slag dryer

Slag Dryer Specification

Production capacity: 300-3000 t/d

Supported fuels: natural gas, fuel, blended fuels, etc.

Applicable materials: blast furnace slag, iron ore slag, steel slag, carbide slag, water slag, coal slag, limestone, ore, etc.

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Slag is a byproduct formed during metal smelting, ore extraction, or other metallurgical processes. It consists of impurities, non-metallic components, and other materials melted at high temperatures from metal ores. Slag holds promising commercial prospects to some extent. With increasing demand for sustainable development and resource recovery, research into the reuse and recycling of slag is also growing. The moisture content of slag is indeed a significant consideration, especially for certain types of slag that require drying before application. This calls for the use of slag dryers(slag rotary drying machines).

Slag Dryer for Sale

Blast Furnace Slag
Blast furnace slag
Iron ore slag
Iron ore slag
steel slag
Steel slag
water slag
Water slag

The slag dryer designed and manufactured by AGICO is a specialized mining equipment for drying various slag products. AGICO provides tailored technical solutions and drying equipment configurations for specific materials, enabling rapid drying and dehydration of blast furnace slag, iron slag, steel slag, and slag from other materials. The rotary drying machine has a large daily processing capacity, ranging from 10 tons to over 1000 tons of slag drying per day. It supports customized services for large-scale slag drying machines. Utilizing high-temperature hot air drying technology, the slag dryer can reduce the final material moisture content to less than 5%, ensuring uniform drying, low environmental impact, and reduced drying costs.

slag dryer
slag dryer

The slag dryer produced by AGICO features an innovative lifting plate device with multiple functions, including guidance, uniform flow, and material lifting. These functions ensure comprehensive and uniform distribution of materials on the radial cross-section of the drying drum, forming a thin and even curtain of materials. This allows for full contact with the hot air flow, thereby achieving optimal utilization of thermal energy. The operational parameters of this slag rotary drying machine adopted by AGICO are reasonable, resulting in a reduction of coal and electricity consumption by over 10-15% compared to conventional drying equipment, while also increasing the hourly output by over 10-15%. This type of slag dryer has been widely applied in cement and ore dressing industries.

Slag Rotary Dryer Specifications

Capacity(t/d)Initial moisture(%)Finished moisture(%)Total power(kw)Floor area(㎡)
30020-30≤513042×16
50020-30≤515046×16
80020-30≤520048×16
100020-30≤525051×16
130020-30≤528052×18
150020-30≤533055×18
180020-30≤538056×18
220020-30≤545058×18
270020-30≤556060×18
300020-30≤566060×18

The Working Process of Slag Rotary Drying System

In a slag drying production line, the slag dryer often needs to work in conjunction with a series of equipment. We collectively refer to the slag dryer and a series of ancillary equipment as the slag drying system. The slag drying system mainly consists of a slag dryer, a hot air furnace, a feeding conveyor, a discharging conveyor, an induced draft fan, a cyclone dust collector, a bag filter, and an operating system. Wet slag enters the drying drum and goes through the following several working zones:

Working process of slag rotary drying system
Working process of slag rotary drying system

Material loading zone:

Upon entering the drying drum, wet slag first enters the material loading zone. In this area, the wet slag rapidly comes into contact with high-temperature hot air, initiating the evaporation of moisture. Simultaneously, propelled by the large inclination of the loading plate, the slag does not easily adhere and smoothly transitions into the next working zone.

Lifting and cleaning zone:

Subsequently, the wet material enters the lifting and cleaning zone. Here, the wet material is lifted by the lifting plates, forming a curtain-like state. Due to the tendency of wet slag to adhere to the inner wall of the drum upon falling, the equipment is designed with a cleaning device to effectively remove the adhered slag. Additionally, the cleaning device also breaks up slag clumps, increasing the heat exchange area and enhancing the drying rate.

Inclined material lifting zone:

Following is the inclined material lifting zone. In this area, the wet slag has reached a low moisture loose state and no longer exhibits adhesion. After sufficient heat exchange, the slag achieves the required moisture content, preparing to enter the discharge area.

Discharging zone:

Lastly, we have the discharging zone. Here, the drum no longer has lifting plates. Wet slag rolls and glides to the discharge outlet in this area, completing the entire slag drying process.

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Application of Slag Dryer

Although slag is a byproduct generated during smelting or ore extraction processes, it holds the potential to bring more commercial opportunities to the slag industry through a series of technological treatments such as efficient slag drying and resource recovery. Furthermore, the applications of slag in areas such as construction materials, resource recycling, and environmental management are continuously expanding, providing more possibilities for its commercial utilization.

Application of Slag Dryer
Application of Slag Dryer

1. Blast furnace slag

Drying Requirement: Blast furnace slag is typically generated during the smelting process by water quenching and often carries a high moisture content.

Application: After drying, blast furnace slag can be used as a concrete additive, road base material, cement product, etc. Due to its higher silicon content, it can also be utilized in glass manufacturing.

2.Furnace slag

Drying Requirement: Furnace slag is typically generated during the metal smelting process, and its moisture content depends on the smelting process and cooling method. Certain types of furnace slag may require drying to reduce moisture content.

Application: After drying, furnace slag can be used in road construction, soil improvement, cement production, etc. It can also serve as railway track materials.

3.Coal gangue

Drying Requirement: Coal gangue is a byproduct generated during coal mining, with high moisture content, often requiring drying to reduce moisture levels.

Application: After drying, coal gangue can be used to manufacture bricks, tiles, coal gangue bricks, and other building materials. It can also be utilized in power generation, cement manufacturing, and other industrial applications.

4.Bauxite residue

Drying Requirement: Bauxite residue is typically generated during the extraction of aluminum, with relatively high moisture content, requiring drying treatment.

Application: After drying, bauxite residue can be used for soil improvement, mine reclamation, cement production, etc. It can also be utilized in the production of ceramics, glass, and other products.

Before effectively utilizing the aforementioned types of slag materials, they all require a certain degree of drying treatment. The slag dryer produced by AGICO is specifically designed based on the characteristics of slag-like products. Feel free to send us an inquiry for more details. Our technical engineers will communicate with you one-on-one and provide professional design and free planning for the slag drying system according to your requirements.

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