LZ-3ER-GV Refractory castable installation/gunning machine is a compact and versatile rotor-type unit developed for dry spraying and pneumatic conveying applications. It is designed to handle a wide range of construction and refractory materials, including refractory mixes, refractory castable, concrete, mortar, sand, pea gravel and crushed stone.



With its multifunctional design, the LZ-3ER-GV can be used not only for refractory lining installation and repair, but also for dry concrete spraying and pneumatic material conveying. This makes it suitable for steel plants, cement plants, industrial furnaces, tunnels and other construction projects requiring flexible material application.



Compared with conventional gunning machines, the LZ-3ER-GV features a lighter and more compact structure, making transportation, positioning and operation easier, especially in confined or limited-access working areas.



The LZ-3ER-GV Refractory castable installation/gunning machine also offers flexible output adjustment. By selecting rotors of different sizes and regulating the motor speed, the theoretical output can be adjusted from 0.25 to 3 m³/h. This allows the spraying and conveying capacity to be matched more closely to different refractory materials, lining thicknesses and construction requirements.



The LZ-3ER-GV provides a practical solution for projects that require compact equipment, adjustable output and compatibility with multiple materials.

LZ-3ER-GV Refractory castable installation/gunning machine is designed for dry spraying, installation and localized repair of refractory linings in cement plants, industrial kilns, furnaces and other high-temperature processing equipment.



Its compact structure, adjustable material output and pneumatic conveying system make it particularly suitable for refractory maintenance areas where conventional casting or manual installation is difficult. The machine can be used for both new refractory lining construction and repair of worn or damaged lining sections.



Cement Plant Applications
In cement production plants, refractory linings are continuously exposed to high temperatures, abrasion, thermal cycling and chemical attack. The refractory gunning machine can be used for installation and maintenance in different sections of the cement production line, including:
* Preheater cyclone lining repair
* Cyclone wall and roof refractory spraying
* Calciner lining installation and maintenance
* Riser duct refractory repair
* Kiln inlet chamber maintenance
* Tertiary air duct refractory installation
* Rotary kiln inlet refractory repair
* Kiln outlet and discharge area maintenance
* Kiln hood refractory lining
* Burner pipe surrounding area repair
* Grate cooler wall and roof maintenance
* Cooler outlet refractory repair
* Localized worn lining restoration
* Cement plant shutdown refractory maintenance
For localized maintenance, refractory gunning allows repair material to be applied directly to worn areas, making it suitable for small-volume repairs and difficult-to-access sections of the preheater, calciner and duct systems.



Rotary Kiln and Kiln Hood Repair
The machine can be used for refractory repair around the kiln inlet, outlet, kiln hood and other areas where monolithic refractory materials are applied.
Typical repair positions include:
* Kiln inlet chamber
* Kiln discharge area
* Kiln hood walls
* Kiln hood roof
* Burner surrounding areas
* Nose ring surrounding refractory
* Local hot spots
* Worn monolithic lining sections
The flexible spraying hose allows operators to reach curved, vertical and overhead surfaces where conventional casting may require additional formwork.

Preheater and Calciner Maintenance
Preheater towers and calciners contain many irregular structures, ducts and elevated working areas. Dry refractory spraying is particularly useful for maintenance in these locations.
Typical applications include:
* Upper and lower cyclone walls
* Cyclone roofs
* Cone sections
* Feed pipes
* Calciner walls
* Riser ducts
* Connecting ducts
* Tertiary air ducts
* Local erosion areas
The machine can be positioned outside the repair area while refractory material is conveyed through the hose to elevated or confined working locations.

Grate Cooler Refractory Repair
The refractory gunning machine can also be used for maintenance of clinker cooling systems, including:
* Grate cooler sidewalls
* Cooler roof
* Hot-end refractory lining
* Outlet ports
* Cooler transition areas
* Duct connections
* Localized damaged lining
These areas experience abrasion, high temperature and repeated thermal changes, making routine refractory inspection and localized maintenance important.

Industrial Kiln and Furnace Applications
In addition to cement plants, the refractory gunning machine can be used for refractory installation and maintenance in various industrial kilns and furnaces.
Typical applications include:
* Lime kilns
* Rotary kilns
* Ceramic kilns
* Glass melting furnaces
* Aluminum melting furnaces
* Foundry furnaces
* Heating furnaces
* Reheating furnaces
* Coke ovens
* Incinerators
* Industrial boilers
* Metallurgical furnaces
* Heat-treatment furnaces
* Other high-temperature processing equipment

Typical Furnace Repair Positions
The machine is suitable for spraying refractory materials onto:
* Furnace sidewalls
* Furnace roofs
* Furnace bottoms
* Curved lining surfaces
* Burner zones
* Charging areas
* Discharge areas
* Slag-contact zones
* Material impact zones
* Hot spots
* Cracked refractory surfaces
* Eroded lining sections
* Localized damaged areas
* Difficult-to-access furnace interiors

Suitable Construction Work
The refractory gunning machine can be applied to:
* New refractory lining installation
* Monolithic refractory construction
* Localized lining repair
* Preventive furnace maintenance
* Emergency refractory repair
* Shutdown maintenance
* Partial lining restoration
* Refractory thickness rebuilding
* Furnace hot-spot repair
* Industrial kiln refurbishment
Its lightweight and compact design makes the machine especially useful for maintenance projects where frequent relocation, limited working space or flexible spraying output is required.

• Electrical drive with frequency inverter
• Adjustable operating speed and spraying output
• Air vibrator for smooth hopper feeding
• Air gun for convenient machine cleaning
• Reduced dust generation during spraying
• Lower material rebound
• Stable and continuous material feeding
• Lightweight and compact machine design
• Easy transportation and positioning
• Suitable for confined working areas
• Suitable for refractory lining installation and repair
• Easy operation and daily maintenance