Special smelting equipment for making sodium sulfide

Equipment supporting process flow:
Raw materials such as anhydrous mirabarite and excessive pulverized coal, through the dosing station dosing, mixing and stirring to the raw material bin, through the bin pump into the roof storage bin, through the ring feeder into the feed bin, through the tube screw feeder and the feed pipe feed, and then into the melting furnace for heating and melting. After melting for a certain time, continuous heating will melt sodium sulfide into the water quenching tank. After the reality of 24 hours continuous baking method.

Equipment Overview:

The electric furnace adopts the mineral-heat furnace structure, and is equipped with a three-phase transformer, a total of 3 electrodes, and a circular arrangement structure.
A complete set of electric furnace equipment, mainly including:
Furnace shell, smoke hood, smoke exhaust system, electrode system, short net system, hydraulic system, cooling water in front of the furnace, charging system.
Electric furnace transformer, high voltage cabinet, low voltage control cabinet, automatic control system, monitoring system.
Auxiliary system; Furnace lining, refractory material, mixing system, bin pump feeding system, circular distribution system, circulating water system.

Structural characteristics of electric furnace equipment:

1.1 Fixed circular shell structure, partial core double oven structure.
1.2 To fix the smoke hood, the preliminary scheme adopts the structure of water at the top and high aluminum knotting material at the bottom. Semi-closed structure, surrounded by observation doors (explosion-proof valves).
1.3 Electrode automatic lifting device, pressure ring copper tile structure. It is equipped with upper and lower hydraulic lock, which is convenient for automatic pressure discharge electrode. Displacement sensor device, electric automatic pressure release.
1.4 Large-section water-cooled cable with short-net design and water-cooled copper pipe in parallel inverse parallel arrangement structure.
1.5 The water cooling system has pressure and water temperature, flow monitoring, water cut off or water shortage automatic alarm device.

Mechanical equipment Description:

(1) Furnace body;

(2) Smoke hood system;

(3) Smoke exhaust system;

(4) Electrode system；

(5) Secondary conductors and terminals;

(6) Water supply and drainage system in front of the furnace;

(7) Hydraulic system;

(8) Feeding device.

Core Types of Equipment

1. Rotary Kiln Equipment: Suitable for large-scale continuous production. It uses a rotating cylindrical kiln to heat raw materials to 800–1100°C, enabling the reduction reaction of sodium sulfate.
2. Fixed Furnace Equipment: Ideal for small-to-medium batch production. It adopts a stationary furnace with precise temperature control, often used for producing high-purity sodium sulfide.

Key Functional Features

• High-Temperature Resistance: Constructed with heat-resistant materials (e.g., refractory bricks) to withstand the extreme temperatures required for the reaction.
• Precise Control: Equipped with temperature and pressure monitoring systems to stabilize reaction conditions, reducing impurities in the final product.
• Energy Efficiency: Integrated with waste heat recovery devices (e.g., heat exchangers) to lower energy consumption and operational costs.

Typical Application Scenarios

• Chemical Industry: Produces sodium sulfide for manufacturing 硫化 dyes (sulfur dyes) and sodium thiosulfate.
• Mining Industry: Supplies sodium sulfide as a flotation reagent to extract non-ferrous metals (e.g., copper, lead) from ores.