DEVELOPERS: ass. prof. Dreshpak O.S., ass. Prof. Dreshpak N.S., ass. Prof. Berezniak O.O., res. Chechel P.O., res. Berezniak O.O., res. Shutov V.Yu.

PROJECT ESSENCE

The scope of the design of the graphite beneficiation process includes the results of ongoing process testing of similar enterprises to obtain relevant process data required to select and confirm equipment performance and process flow-sheet performance for graphite extraction, determination of concentrate grades and graphite flake size.

TECHNOLOGICAL SUPPORT

The tests will be performed after chemical and petrographic testing of the raw materials (performed at the Center for Processing and Enrichment of Mineral and Man-made Raw Materials of NTU Dnipro University of Technology). The process flow chart below is based on the results of laboratory tests. The process flow chart will include:

• jaw crushing;

• crushing in a VSI centrifugal crusher;

• SAG mill; • wet forced sieving;

• wet forced self-scrubbing;

• double classification in hydrocyclones of different diameters;

• basic froth flotation in a Jameson Cell flotation machine;

• froth flotation in the Jameson Cell flotation machine

• grinding of rough concentrate in a tumbling mill (modernized ball mill with ceramic cylinders);

• concentrate purification by chemical methods (sulfuric acid treatment);

• concentrate dehydration;

• drying and packaging. The result of the tests will be the calculation of a technological (machine) and water-sludge scheme for the enrichment of graphite-containing raw materials with additional extraction of co-products (sand, clay, etc.).

INFORMATION FOR INVESTOR

The cost of laboratory research (feasibility study) is 10.0-15.0 thousand EUR. The test period (depending on the number of samples) is from 2 months. The term for issuing a technological and water-sludge scheme is 2 months. The term for designing a working line is 3-6 months.

DEVELOPERS: Stanislav Bartashevsky, Andrii Koveria, Alina Ovcharenko, Nataliia Perederii, Tetiana Bulana, Serhii Bartashevsky

PROJECT ESSENCE

Development of a fuel pellet system based on the reactions of non-aggressive components ˗ compact hydrogen generator with the performance varying ability according to the needs and modes of the equipment - a hydrogen burner for heat supply or a fuel unit for electricity supply.

RESULT

System development: "Fuel pellets from inert materials - Hydrogen generator - Hydrogen burner" will make it possible to provide power to electrical equipment in field conditions without harming the environment.

The technology for producing hydrogen from chemically neutral materials directly on vehicles will increase the safety of their operation. The use of hydrogen burners will provide heating and cooking in enclosed rooms and field shelters without the threat to personnel, avoiding smoke and heat demasking factors. Recycling technology is the recovery of chemical reaction components, which can also be used to utilize excess electricity from renewable sources.

BENEFITS OF IMPLEMENTING THE DEVELOPMENT

The introduction of this complex will ensure an efficient and safe supply of heat and electricity to both consumers and electric vehicles in field conditions.

DEVELOPERS: ass.prof. Dreshpak О.S., ass.prof. Dreshpak N.S., ass.prof. Bereznyak О.О., res. Chechel P.О., res. Bereznyak О.О..

PROJECT ESSENCE

The technology involves the gentle extraction of amber with a grain size of +5 mm, enrichment of the associated mined sand to EN (ASTM) specifications, and forced accelerated settling of clay particles of used water, which will reduce the consumption of process water and reduce the amount of construction work on the sludge pond. Due to the high productivity (up to 200 tons per hour of solid) and the reduced water cycle, the processing speed of the amber-bearing area will increase several times.

APLICATION AREA

Use of the deep beneficiation module as a "green recycling" to accelerate the settling of solids from recycled water, which produces a short cycle of its circulation and reduces the use of quarry transport to move the artificial sludge pond, as well asthe extraction of enriched sand as a separate co-product.

END PRODUCTS

Amber with a grain size of +5 mm with a recovery of up to 95%, enriched sand with a grain size of -5+0.08 mm, process water of accelerated rotation due to the use of peptizes (relevant in the summer or in areas with reduced water inflow). The technology is basedon the adhesive-chemical processesof interaction between quartz grains and clay particles, using the author's installation.

INFORMATION FOR INVESTOR

Cost of the semi-mobile module for the deep enrichment Amberking is 180.0-200.0 thousand Euro. Design work period – 2 months. Manufacturing time – 4 months. Pay-back period – 8 - 10 months.