Order Code	Product Name
L-01-10-M04	Pre-firing Ashing Calcining & Roasting Furnace for Mining Laboratories

Pre-firing, Ashing, Calcining & Roasting Furnace

Brief Introduction

The Pre-firing, Ashing, Calcining & Roasting Furnace is a heavy-duty thermal processing unit designed for high-volume sample pretreatment in mining, metallurgical, and analytical laboratories. It supports essential laboratory thermal procedures including pre-firing, ashing, calcining, and ore roasting with stable high-temperature treatment up to 1000°C.

Constructed with a 304 stainless steel housing, fire brick lining, and vermiculite thermal insulation, the furnace provides strong heat retention and structural durability for long-cycle operation. Equipped with Kanthal A1 spiral heating elements and PID intelligent temperature regulation, it delivers uniform thermal field distribution and stable temperature control. The large-capacity internal rack system supports six stainless steel trays for efficient batch processing of mineral samples.

Application Scope

Mineral Sample Preparation

The furnace is suitable for ore roasting, organic matter ashing, and pre-firing treatment of raw ores, mineral concentrates, and geological samples. Stable high-temperature heating removes volatile impurities and organic components, preparing standardized solid samples for subsequent elemental analysis and mineral composition detection.

Mineral Analysis

This thermal processing furnace supports loss-on-ignition testing and high-temperature decomposition experiments, providing reliable thermal treatment conditions for mineral property evaluation and ore analysis workflows.

Metallurgical Testing

The equipment is applied for calcining treatment of metallurgical raw materials and auxiliary samples. It provides controlled high-temperature oxidation environments for laboratory evaluation of material thermal characteristics and metallurgical testing procedures.

Features

• Industrial-Grade Furnace Structure: Built with a 2 mm thick 304 stainless steel cabinet, fire brick lining, and vermiculite-insulated furnace door, providing strong thermal insulation and structural stability during long-term high-temperature operation.

• Uniform Heating Performance: Equipped with Kanthal A1 spiral heating elements embedded in wall recesses, ensuring stable power output and consistent thermal treatment conditions throughout the furnace chamber.

• PID Temperature Control System: Uses K-type thermocouple and PID solid-state relay temperature regulation to achieve automatic temperature control up to 1000°C. The 24-hour countdown timer supports long-duration heating experiments.

• Large-Capacity Batch Processing: Internal 304 stainless steel rack structure supports six independent trays with standardized spacing, enabling efficient processing of multiple samples in one operation.

• Durable Sample Tray Design: Matched 304 stainless steel trays provide a stable loading platform for routine mineral and metallurgical thermal pretreatment applications.

• Energy-Efficient Thermal Operation: The insulated furnace structure minimizes heat dissipation and external temperature rise, supporting safer and more stable laboratory operation during extended heating cycles.

Specification

Parameter	Specification
Internal Chamber Dimensions	810 mm (H) × 600 mm (W) × 600 mm (D)
Overall External Dimensions	1700 mm (H) × 800 mm (W) × 840 mm (D)
Net Weight	450 kg
Maximum Temperature	1000°C
Heating Elements	Kanthal A1 spiral heating elements
Rated Power	10.5 kW, three-phase current
Temperature Sensor	K-type thermocouple
Control System	PID regulation with solid state relay, 24-hour countdown timer
Cabinet Material	2 mm 304 stainless steel, fire brick lining, vermiculite insulation
Internal Rack	304 stainless steel angle, supports 6 trays (125 mm pitch)
Tray Specification	500×500×50 mm, 2 mm thick 304 stainless steel

Why Choose FKN PANDA

FKN PANDA Pre-firing, Ashing, Calcining & Roasting Furnace provides stable thermal processing performance for mining and metallurgical laboratories. PID temperature regulation and evenly distributed Kanthal heating elements maintain consistent chamber conditions, supporting repeatable ashing, roasting, and calcining results during mineral sample preparation.

The furnace offers reliable long-term operation through its industrial-grade 304 stainless steel structure, fire brick lining, and durable heating components. These design features support frequent laboratory batch processing while reducing maintenance requirements and improving equipment lifespan.

With a six-tray large-capacity design and 24-hour countdown timing function, the equipment improves laboratory productivity by supporting multiple sample treatments and long-cycle unattended heating operations.

Integrating pre-firing, ashing, calcining, and roasting functions, the furnace matches standardized mineral sample preparation and metallurgical thermal testing workflows. It provides a practical thermal processing solution for mining laboratories, metallurgical testing centers, and industrial quality control departments.

High-durability heating elements, corrosion-resistant stainless steel construction, and efficient thermal insulation help reduce replacement frequency and operating costs. The furnace provides stable performance for laboratories requiring dependable high-temperature sample treatment capability.

Ashing Furnace & Calcination Furnace – FAQ

Q1. How to select between an ashing furnace and a calcination furnace for mineral testing laboratory applications?

The selection between an ashing furnace and a calcination furnace depends on the required thermal treatment process, sample characteristics, and analytical objectives. Ashing furnaces are commonly used for applications such as organic matter removal, ash determination, and oxidation treatment, while calcination furnaces are typically applied for mineral phase transformation and thermal decomposition studies. Mining laboratories should evaluate sample types, required temperature conditions, atmosphere requirements, batch capacity, and integration with downstream mineral testing workflows when selecting equipment for new laboratory setup or process expansion.

Q2. What factors should be considered when choosing furnace capacity for mineral testing laboratory applications?

Furnace capacity selection should be based on sample throughput, crucible quantity, laboratory workflow, and expected future testing demand. A mining laboratory processing routine mineral samples requires sufficient chamber space to maintain efficient batch operation while ensuring proper heat distribution. Factors such as sample size, crucible arrangement, heating uniformity, and available laboratory infrastructure should also be considered. Appropriate capacity planning helps support continuous operation during laboratory expansion, equipment replacement, or increased analytical workload.

Q3. How does ashing temperature selection affect mineral sample oxidation and analysis results?

Ashing temperature selection directly influences oxidation behavior, removal of combustible components, and the condition of the remaining mineral residue. In mineral testing workflows, unsuitable temperature settings may affect sample characteristics and subsequent analytical procedures. Laboratories should select temperature programs according to sample composition, testing objectives, and established analytical methods. Proper thermal control supports consistent sample preparation before further stages such as mineral analysis, metallurgical evaluation, or process development studies.

Q4. Can an ashing furnace be used for pre-oxidation treatment of refractory gold ores?

An ashing furnace can be considered for certain pre-oxidation treatment studies involving mineral samples where controlled thermal oxidation is required. In refractory gold ore research, thermal treatment may be evaluated as part of broader metallurgical testing workflows before extraction studies. The suitability depends on ore mineralogy, required oxidation conditions, sample characteristics, and laboratory procedures. Mining laboratories should assess the relationship between thermal treatment parameters and downstream testing objectives before selecting equipment for metallurgical evaluation.

Q5. What are the differences in thermal processing capabilities between a dedicated ashing furnace and a general-purpose muffle furnace?

A dedicated ashing furnace is designed around specific thermal treatment requirements such as controlled oxidation, ash determination, and mineral sample preparation, while a general-purpose muffle furnace is typically used for broader heating applications. Differences may include airflow management, temperature control functions, chamber configuration, and suitability for repeated analytical workflows. For mining laboratories, equipment selection should be based on the required testing procedures, sample types, operating frequency, and the level of process control needed.

Q6. How does furnace atmosphere affect calcination results for mineral processing research?

Furnace atmosphere can influence oxidation reactions, decomposition behavior, and phase changes during calcination processes. Different mineral samples may respond differently depending on oxygen availability and thermal conditions. For applications such as ore treatment studies, concentrate evaluation, or hydrometallurgical research, laboratories should consider atmosphere requirements together with temperature profiles and residence time. Understanding these factors helps researchers establish more consistent thermal treatment procedures for mineral processing experiments.

Q7. How to maintain temperature uniformity across multiple mineral sample crucibles in an ashing furnace?

Maintaining temperature uniformity requires appropriate furnace design, correct sample loading practices, and regular temperature verification. Uneven crucible placement, excessive loading, or improper airflow conditions may influence heat distribution inside the chamber. Mining laboratories should follow recommended loading procedures and perform routine equipment checks to maintain consistent thermal conditions. Stable temperature distribution is important for obtaining comparable results when processing multiple samples during ash determination or mineral preparation workflows.

Q8. What factors should be considered when installing an ashing furnace in a new mining laboratory?

Installation planning for an ashing furnace should consider laboratory space, power requirements, ventilation conditions, operating workflow, and safety considerations. The furnace location should support efficient movement of samples from preparation to thermal treatment and subsequent analysis. For new mining laboratories or testing center expansions, equipment selection should also consider future workload, maintenance accessibility, operator requirements, and compatibility with existing laboratory procedures to support continuous operation.

Q9. What maintenance procedures extend heating element life in a calcination furnace used for daily mineral processing?

Regular maintenance helps maintain stable furnace performance and extend the service life of key components such as heating elements, temperature sensors, and refractory materials. Recommended practices include routine inspection, cleaning of residue accumulation, monitoring temperature control performance, and avoiding operating conditions beyond equipment specifications. For laboratories conducting daily mineral processing experiments, preventive maintenance planning and timely replacement of wear components are important for maintaining reliable thermal processing capability.

Q10. What factors should be considered when sourcing ashing and calcination furnaces for an international mining laboratory project?

When sourcing thermal treatment equipment for an international mining laboratory project, key considerations include application requirements, temperature capability, chamber configuration, capacity, maintenance support, documentation, and compatibility with local laboratory conditions. Procurement teams should evaluate how the furnace fits into the complete mineral testing workflow, including sample preparation, thermal treatment, and subsequent analytical procedures. A suitable selection process helps ensure reliable operation for laboratory construction, expansion, or long-term equipment replacement planning.

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