OW-881-TG 300℃ Thermostatic Electric Blast Drying Oven SUS Inner Chamber

The OW-881-TG electric blast drying oven is a high-performance constant-temperature drying equipment designed for mineral processing laboratories, geological testing institutes and mining quality inspection scenarios. It is dedicated to drying ore samples, concentrate/tailings filter cakes, experimental utensils and other materials, providing reliable dry sample support for subsequent beneficiation tests, component analysis and moisture content detection.

This model adopts a three-dimensional hot air circulation system and SSR precision temperature control technology, with excellent temperature uniformity and long-term operation stability. The chamber is made of thickened stainless steel, matched with multi-dimensional safety protection systems and brand-grade electrical components, which can stably adapt to long-term continuous operation in mineral laboratory environments, and effectively guarantees the consistency of sample drying effects and the accuracy of test data.

• High-precision temperature control: Equipped with PID self-tuning dual-display controller, temperature resolution up to 0.1℃, temperature fluctuation within ±0.5℃, which meets the strict temperature control requirements of mineral sample drying tests.
• Heavy-duty corrosion-resistant structure: 1.2mm thick SUS stainless steel inner chamber, fully argon-arc welded seams, matched with 100mm thick high-density insulation layer, durable in mineral dust and reagent environments, with low heat loss.
• Uniform hot air circulation: Independent three-air-duct design, matched with high-temperature resistant centrifugal fan, ensuring uniform temperature distribution in the whole chamber, and consistent drying effect of samples at different positions.
• Multi-level safety protection: Built-in over-temperature protection, leakage protection, phase sequence protection, motor overload protection and other safety mechanisms, with sound and light alarm and emergency stop function, ensuring safe long-term operation.
• Energy-saving and low-noise design: High-efficiency energy-saving motor and optimized air duct structure, low operating noise; constant temperature stage only uses 30% of heating power, reducing long-term operation energy consumption.

• Inner chamber: 1.2mm thick SUS stainless steel, all internal splicing gaps adopt full argon arc welding and coated with high-temperature resistant sealant, smooth and easy to clean, no dead angle for mineral dust accumulation.
• Outer shell: 1.2mm high-quality SPCC cold-rolled steel plate, electrostatic spraying surface treatment, corrosion-resistant and easy to maintain.
• Insulation layer: 100mm thick imported aluminum silicate fiber insulation wool, effectively reducing heat loss and cabinet surface temperature.
• Supporting structure: Made of national standard 8# channel steel, 10# channel steel, 10# H-beam and 5# angle steel, with stable structure and strong load-bearing capacity.
• Space-optimized design: Moderate operation height, compact footprint, easy for daily maintenance; reserved ≥600mm operation space around the equipment is recommended.

• Controller: High-precision dual-display digital controller, displays set temperature and actual measured temperature simultaneously, with power-on self-test and PID automatic calculation function, supporting automatic constant temperature control.
• Temperature sensing element: K-type armored thermocouple, fast response and high measurement accuracy.
• Control mode: SSR thyristor control, automatic completion of blast and heating process; setting accuracy 1℃, full range 0℃~300℃ adjustable.
• Heating element: High-temperature resistant stainless steel heating tube, fast heating speed and long service life.
• Emergency stop switch: Equipped on the control cabinet for emergency shutdown in case of equipment abnormality.

• Three independent air ducts: Upper air duct equipped with blast motor and centrifugal fan blade; heating elements installed on both side air ducts; perforated deflector for more accurate hot air flow and better temperature uniformity.
• Blower motor: YBX3 high-efficiency energy-saving embedded high-temperature resistant special motor, configured with 1*40W special centrifugal fan, stable air volume and low noise.

Core electrical components including contactors, overload protectors, solid state relays and air circuit breakers are selected from Schneider and Himaton brands, with high reliability and long service life.

• Over-temperature protection: automatically cuts off heating power with sound and light alarm when temperature is abnormal, preventing sample damage and equipment failure.
• Phase sequence and phase loss protection: avoids motor reverse rotation or burnout caused by abnormal power supply.
• Leakage protection: guarantees operation safety for operators.
• Motor thermal overload protection: prevents motor damage caused by overheating.
• Sound and light alarm function for abnormal operation status.

• Mineral processing laboratories: drying of ore samples, concentrate, tailings and filter cakes before testing
• Geological and metallurgical research institutes: constant temperature drying of rock and mineral specimens
• Sample preparation workshops: drying and dehumidification of crushed and ground mineral samples
• Quality inspection departments: moisture content detection and constant temperature treatment of mineral products
• General industrial laboratories: drying of glassware, small parts and electronic components

To build a complete mineral sample preparation and testing workflow, this drying oven is commonly used with the following equipment:

• Laboratory jaw crusher / double roll crusher (sample crushing before drying)
• Laboratory disc vacuum filter (solid-liquid separation of pulp before drying)
• Electronic analytical balance (sample weighing before and after drying)
• Laboratory vibrating screen (particle size screening after sample drying)

We can provide a complete set of laboratory sample preparation equipment configuration solutions according to your test scale and ore types.

• Touch LCD temperature controller
• PLC programming control + temperature module
• RS485 port / MODBUS communication protocol
• Programmed temperature curve function
• Data storage and export function