Equipment

Units for crushing, sampling, and preparing raw materials for processing

The sampling unit's capacity is:

• Without crushing: 500 kg per hour
• With crushing: 200 kg per hour

The sampling line is a chain of modern units operating in a continuous cycle:

• Vacuum transport system for feeding sampled material to the head of the line
• Mixer tank with vibration discharge
• Vibrating screen for classifying material by fraction
• Automatic samplers that generate representative samples from all fractions in a continuous mode
• A dust collection system ensures the return of material to the sampling cycle
• The sampling line is controlled automatically, eliminating the influence of the "human factor"

The applied process schematic allows for the collection of representative samples which eliminates unreliable results during analysis

Gravity Unit

One of the areas of activity of our company is the processing of complex types of gravity concentrates and valuable refining waste using a modern gravity concentration unit equipped with high-frequency jigging machines of the MOL series.

MOL machines were developed as high-tech equipment for the extraction of diamonds and precious metals from natural and man-made raw materials.

A distinctive feature of these machines is their relatively high pulsation frequency (up to tens of Hz and higher), which enables particularly effective separation by mass of fine minerals with a density difference of up to 1 g/cm³.

MOL jigging machines make it possible to effectively extract free precious metals in the form of fine and flaky particles, even from raw materials consisting predominantly of heavy-fraction minerals. Machines of this design were particularly successful in extracting gold and platinum from heavy tailings of placer gold processing plants (magnetic separation tailings, magnetic-fluid separation tailings, and tables` middlings) or from the middlings of the gold processing plants.

Tubular rotary electric furnace for calcining and drying granular materials

Tubular rotary electric furnace for calcining and drying granular materials:

Electric heating ensures high-precision heating to the set temperature and maintaining it within the specified range across furnace zones. Operating temperature up to 1380ºC. The furnace is equipped with fechral and silite heaters. Capacity up to 0.5 tons per day. Low volume of exhaust gas.

The furnace can be optionally equipped with a system for collecting gaseous products of calcination.

Application area

Used for calcinating and roasting granular materials that do not tend to stick together. For sublimation, followed by the recovery of valuable components.

• The roasting furnace capacity is up to 2,500 kg/day and a process temperature is up to 850°C. Oxidative calcination burns off organic inclusions from the catalyst surface. High-temperature catalyst calcination
• The calcination furnace capacity is up to 500 kg/day, the process temperature is over 1,200°C. High-temperature calcination converts aluminum into the insoluble α-form, while simultaneously distilling off rhenium.

The silver refining unit is designed to produce high-purity silver crystals with a silver content of at least 99.99%. The initial raw material is silver-based alloys with a silver content of at least 85%

Silver Refining Unit

The unit's capacity is at least 500 kg per month. The design of the electrolysis cells allows for periodic unloading of silver crystals, reducing the volume of work in progress. Periodic unloading allows for a smaller overall size of the electrolysis cells, resulting in a smaller footprint compared to traditional silver refining units. Reducing the volume of electrolyte used in silver electrolysis allows to reduce the volume of silver in work in progress.

High-Temperature Melting Unit

The high-temperature furnace Unit (HTFU) is designed for processing refractory oxidized materials containing precious metals to extract their valuable components. The unit's solid charge processing capacity is at least 30 tons per month. The additive content (fluxing agents and collector) in the charge does not exceed 50% of the total charge weight. 
‌The unit's design is based on the principles of electroslag remelting furnaces. A "cold crucible" which is a water-cooled crystallizer is used to conduct melting over a wide temperature range without a refractory lining.

Unlike electroslag refining, this design utilizes non-consumable graphite top electrodes and a bottom electrode.
High thermal loads on structural materials require a reliable heat removal system from the furnace components and current leads.

Ore-thermal electric furnace for smelting and depletion of slags

The furnace is designed for smelting and depletion of slags containing precious metals: platinum group metals, gold, and silver.

The initial raw materials are furnace charge consisting of recycled slag and flux additives estimated for specific products.
The slag is based on silicates and aluminosilicates of sodium, calcium, magnesium, and iron. The particle size ranges from 2 to 40 mm, and the moisture content is not more than 5%.

The smelting products are an alloy of precious metals and waste slag. The furnace is designed for a minimum daily capacity of 2.5 tons of solid charge and liquid slag in processing.
The slag melt temperature in operating mode is 1200-1350°C.
The working volume of the furnace melting zone (up to the drain port) is at least 500 liters.
The slag melt temperature in operating mode is 1200–2000°C.
The furnace operates continuously until the molten metal bath fills up, with periodic batch loading, melt settling, waste slag removal, and the extraction of the purposed precious metal alloy as it accumulates, followed by the discharge of slag and metal alloy from the furnace through a bore hole.

Distinguishing features of the system:

• Process temperature: 1200–2000°C;
• Efficient gas cleaning and cooling system;
• High precious metal recovery in the alloy (over 98%);
• Residual precious metal content in slags not more than 30 g/t;
• Furnace operation in both interelectrode and bottom electrode modes;
• Discharge of smelting products through a blasthole or pouring spout;
• Using ore-thermal mode of melting with DC reduces precious metal losses in dust and sublimates;
• The use of furnace cooling elements and special lining extends furnace run-time and significantly reduces furnace draft problems.

Mobile unit for reception of gold-bearing material

For the convenience of prospectors who are mining in remote areas of the country, we have developed a mobile reception unit based on a URAL-4320 (KAMAZ-43118) truck with a trailer or river transport (barge) for additional delivery of industrial goods and food products.

Its equipment includes:

• Induction furnace for metal melting
• Analytical instrument for rapid analysis
• Communication unit for rapid transmission of data following the results of reception equipment
• Precious metals` storage room of the safe-type
• Weighing equipment of the required accuracy class

Metal is received at a pre-agreed collection point based on the supplier's preliminary request. The schedule and route of the Mobile reception unit are determined by the requests received, as well as by geographical and weather conditions. The same payment terms and conditions apply to the supplier as for a stationary reception center, with the exception of final payment