Vietnam Academy of Science and Technology

Project's information

Project's title	Completing the recycling technology of nix grain waste or copper slag into granular cast iron as raw materials for the cementation process of copper powder in hydrometallurgical copper sulphate solution from ore or waste containing copper
Project’s code	UDSXTN.0 2 / 21 -2 2
Research hosting institution	Institute of Materials Science
Coordinating unit, co-chair	Samas Hanoi Technology Production Co., Ltd
Project leader’s name	MSc. Nguyen Ba Phuong
Project duration	01/01/2021 - 31/08/2023
Project’s budget	3000 million VND
Classify	Fair
Goal and objectives of the project	- Completing the process of smelting cast iron from nix - copper slag, contributing to recycling, resource utilization and improving efficiency for the copper smelting industry. - Towards technology transfer or investment cooperation to contribute capital to production facilities.
Main results	- About the science: Completing the technological process of smelting cast iron from nix - copper slag - About the application: The composition of cast iron containing Fe > 88% and C > 3.2% meets the quality standards of cast iron, meeting the requirements as a raw material for the cementing process of copper powder in hydrometallurgical copper sulfate solution from ore or copper containing waste. Cast iron after melting has good castability, high fluidity, little shrinkage, and is easy to fill in the mold. In addition, cast iron also has good compressive strength, static load and abrasion resistance, so cast iron after melting can be used in casting processing to make parts with complex shapes such as: machine shell, body, belt, flywheel, crankshaft, rolling shaft, bearings, gears ...
Novelty and actuality and scientific meaningfulness of the results	- Developing and perfecting the technological process of melting nix - Developing and perfecting the technological process of smelting nix grains waste - copper slag into cast iron products, contributing to dealing with environmental problems caused by nix granules - copper slag. - The product of the project is flat granular cast iron with the size of 0.2 - 0.4cm, with low cost, good application for the cementing process of copper powder. - The technology selected by the project allows effective treatment of nix grains waste - copper slag particles discharged by Vietnamese factories during the production process. Cast iron products created in the project use domestic raw materials, cheap labor costs, low basic investment. These factors ensure the cost of the project's product is lower than the market.
Products of the project	- Published paper(list): + “Research on the influence of some parameters on turning process”, International scientific journal of Internauka, 2023. + “ Melting cast iron from copper slag in the arc furnace”, International scientific journal of Internauka, 2023. - Patents: “Method of melting cast iron from nix grain”, accepted No: 23049w/QD-SHTT, April 21, 2023. - Specific products: + 7.8 tons of cast iron: stored at the experimental workshop of the Institute of Materials Science. + 92.2 tons of cast iron: stored at the warehouse of Samas Hanoi Technology Production Co., Ltd. - Other products: 01 technological process for melting cast iron from waste nix - copper slag (Decision on process recognition No. 868/QD-KHVL dated August 10, 2023)
Research region	Samas Hanoi Technology Production Co., Ltd - No. 72, Lane 158, Truong Dinh Street, Truong Dinh Ward, Hai Ba Trung District, Hanoi.
Recommendations	The process of smelting cast iron from nix grains waste - copper slag in an electric arc furnace shows that the quality of cast iron has achieved the desired specifications. Therefore, the project team believes that in addition to using cast iron for the purpose of recovering copper by cementing method, cast iron products recycled from copper slag can be used to cast a number of other civil products such as manhole covers, fences, linings, machine platforms...
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