About Us

MINEVIK Machinery is a leading and pioneering enterprise with the most advanced international level in R&D, manufacturing and selling of large-scale crushing & screening plants and beneficiation plants.

large-scale crushing & screening plants and beneficiation plants.

All of our equipment have got ISO international quality system certification, European Union CE certification and Russian GOST certification.

  • In central China-Zhengzhou, covering 140 thousand square meters
  • Win-win cooperation and create more value to customers
  • Exported large quantities and high-end mobile crushing plant and milling equipments to Russia, Kazakhstan, Indonesia, Ecuador, South Africa, Nigeria, Turkey more than 100 countries .

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Our Products

AS a leading global manufacturer of crushing and milling equipment, we offer including quarry, aggregate, grinding production and complete stone crushing plant. We also supply individual crushers and mills as well as spare parts of them.

Services

Our goal is to guarantee the excellent operation equipment with high safety for our customers and minimize the downtime of the machine by predictive maintenance. Kefid service and original accessories can be 100% trusted at the time of maintenance.

SERVICE AND SUPPORT

Minevik service and original accessories can be 100% trusted at the time of maintenance.

ACCESSORIES CENTER

striving to enable customers to get the parts in the nearest place.

SALES MARKET

Our sales market is spread all over more than 100 countries and regions

copper recovery from slag in ethiopia

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Enhancing the flotation recovery of copper minerals in

01/01/2020· In these images it is evident that there is very little copper mineral content in this particular slag, confirming the XRD results, which indicate that the reverberatory slag has no copper minerals. This suggests that the reverberatory furnace is efficient in its recovery of copper and other values to the matte phase as it apparently produces a much cleaner slag.

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Recovery of metal values from copper slag and reuse of

Copper slag was characterized and processed. The pyro-metallurgical processing prospects to generate utilizable materials were arrived at through rigorous thermodynamic analysis. Carbothermal reduction at elevated temperature (near 1440°C) helped recover a majority of the metal values (e.g., Fe, Cu and Mo) into the iron-rich alloy product which can be a feed material for steel making. On the

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Recovery of metal values from copper smelter slags by

Copper recovery is generally achieved by pyrometallurgical routes. For ex- ample, re-cycling converter slags with high copper content to the reverbera- tory furnace, or using a separate slag refining furnace. However, in this pro- cess some copper is invariably left behind in the residual slags. It is well recognized that the addition of converter slag to the reverberatory furnace *Present

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A study on copper recovery from the slag of Outokumpu

Therefore, the recovery of the copper from this slag has a practical importance and heavily influences the operational costs. A part of the copper in the slag is in form of fine inclusions suspended in the slag; however, the majority of the copper is dissolved in it. The slag cleaning process is carried out in an electric furnace with coke and limestone additions. The limestone modifies the

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Recovery of Copper from Reverberatory Copper Slag and

The optimum digestion temperature is 250oC, at which a high recovery of copper from copper slag is achieved. Figure 7. Copper in the residue at various digestion temperatures. Effect of Digestion Time at 250oC Figure 8 shows that 2 hours of digestion at 250oC was adequate. 0 20 40 60 80 100 120 140 160 0 20 40 60 80 100 120 (o C) Digestion Water Addition (ml) 0.00 0.20 0.40 0.60 0.80 1.00 1.20

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Improving Copper Recovery from Production Slags by

Keywords: slag cleaning, stirring mode, copper slag, submerged arc furnace, stirring reactor Abstract Slags resulting from pyrometallurgical copper processes are important by-products to be controlled in structure and composition. Due to the significant volumes of slag compared with those of the target metal it is mandatory – as already practiced today – to use the slag as a product e.g

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ISASMELT TM SLAG CHEMISTRY AND COPPER LOSSES IN THE

the RHF slag mass and its copper content has a big influence in the copper recovery of the new Ilo Smelter. This paper discusses the operational issues and the actions that have been implemented in order to obtain a discard RHF slag. One of them is the change of the slag chemistry at the ISASMELTTM Furnace. 1242 CHAPTER 04 Nonferrous Pyrometallurgy INTRODUCTION In response to

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(PDF) Recovery of metal values from copper slags by

The recovery of copper and cobalt from ancient copper slags from the Küre region of Turkey was investigated. A fayalitic-type of ancient copper slag containing 1.24% Cu, 0.53% Co and 53.16% Fe

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Hydrometallurgical stepwise recovery of copper and zinc

01/11/2020· Considerable research efforts have been devoted to the recovery of valuable metals from waste brass slag or copper smelting slag through hydrometallurgical processes in media such as sulfuric acids (Ahmed et al. 2016; Martins et al. 2020; Kaksonen et al. 2017; Roy et al. 2015; Shi et al. 2020; Zhang et al. 2010), sodium hydroxide (Li et al. 2014), and ammonia (Nadirov et al. 2019; Roy et

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Copper Recovery in Smelting Slag Recycling

Copper smelting slag is the solid waste generated in the process of smelting copper. Due to the limitations of the smelting technology, most of the copper smelting slag contains a certain amount of copper. Disposing and recycling copper can effectively reduce the waste of useful resources, while generating considerable economic effectiveness. How to extract copper by smelting slag recycling

More
[randpic]

Recovery of metal values from copper slag and reuse of

Copper slag was characterized and processed. The pyro-metallurgical processing prospects to generate utilizable materials were arrived at through rigorous thermodynamic analysis. Carbothermal reduction at elevated temperature (near 1440°C) helped recover a majority of the metal values (e.g., Fe, Cu and Mo) into the iron-rich alloy product which can be a feed material for steel making. On the

More
[randpic]

Enhancing the flotation recovery of copper minerals in

01/01/2020· In these images it is evident that there is very little copper mineral content in this particular slag, confirming the XRD results, which indicate that the reverberatory slag has no copper minerals. This suggests that the reverberatory furnace is efficient in its recovery of copper and other values to the matte phase as it apparently produces a much cleaner slag.

More
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Recovery of Copper from Copper Slag by

Slag samples were taken from Al-Shaheed State Company. The results of the chemical analysis showed that the slag contained 11.4% of copper. The recovery process included two stages; the first stage is leaching using diluted sulfuric acid. The most important variables that effect on the leaching process was studied, such as acid concentration, hydrogen peroxide adding, particle size, liquid to

More
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The Recovery of Copper from Smelting Slag by Flotation

Aiming at the recovery of copper from smelting slag, a flotation approach was studied. It was found that this slag composed of fine particles with complex association and distribution, in which bornite was the main copper-bearing mineral after a detailed mineralogy analysis via polarizing microscope, SEM and XRD. Consequently, flotation was attempted to recycle Cu in slag containing copper

More
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(PDF) Recovery of metal values from copper slags by

The recovery of copper and cobalt from ancient copper slags from the Küre region of Turkey was investigated. A fayalitic-type of ancient copper slag containing 1.24% Cu, 0.53% Co and 53.16% Fe

More
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Recovery of cobalt, nickel, and copper from slags, using

Nickel-copper converter slag 'A'- 100 kVA and 200 kVA. Using converter slag from a nickel-copper plant, tests were carried out, in 1990, on a 100 kVA furnace (operated at 30 kW) and on a 200 kVA furnace (operated at 85 kW), at low additions of reductant (in order to minimize the reduction of iron). The slag had a composition of Co: 0.45%, Cu: 3%, Fe total: 47%, Ni: 3.5%, and S: 3%. These tests

More
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Copper Recovery in Smelting Slag Recycling

Copper smelting slag is the solid waste generated in the process of smelting copper. Due to the limitations of the smelting technology, most of the copper smelting slag contains a certain amount of copper. Disposing and recycling copper can effectively reduce the waste of useful resources, while generating considerable economic effectiveness. How to extract copper by smelting slag recycling

More
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2-Recovery of Copper and Cobalt from Converter Slag with a

Recovery of Copper and Cobalt from Converter Slag with a New Flotation Method Using H2S Copper slag is produced in large amounts in seven copper smelter plants in Chile, and it is estimated that around 4 million tons of slag are disposed every year and another 40 to 45 million tons are historically cumulated [1]. Different slags need aid transformed as by-products clinched alongside

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Copper extraction Wikipedia

Gill quotes a copper in slag value of 0.23% for a wet-charged reverberatory furnace vs 0.37% for a calcine-charged furnace. In the case of calcine-charged furnaces, a significant portion of the sulfur has been eliminated during the roasting stage, and the calcine consists of a mixture of copper and iron oxides and sulfides. The reverberatory furnace acts to allow these species to approach

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RECOVERY OF IRON FROM COPPER FLASH SMELTING SLAGS

Recovery of Iron from Copper Flash Smelting Slags Figure 3 shows the rapid decreasing of copper content in the slag during the first 15 min-utes with the graphite rod introduced into the melt, while the iron concentration is main-tained almost constant over same period of time, suggesting that a selective reduction according to the thermodynamic stability of both compounds is possible. Also

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Recovery of Copper from Copper Slag by

Slag samples were taken from Al-Shaheed State Company. The results of the chemical analysis showed that the slag contained 11.4% of copper. The recovery process included two stages; the first stage is leaching using diluted sulfuric acid. The most important variables that effect on the leaching process was studied, such as acid concentration, hydrogen peroxide adding, particle size, liquid to

More
[randpic]

The Recovery of Copper from Smelting Slag by Flotation

Aiming at the recovery of copper from smelting slag, a flotation approach was studied. It was found that this slag composed of fine particles with complex association and distribution, in which bornite was the main copper-bearing mineral after a detailed mineralogy analysis via polarizing microscope, SEM and XRD. Consequently, flotation was attempted to recycle Cu in slag containing copper

More
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Iron Recovery from Discarded Copper Slag in a RHF Direct

Studies on the direct reduction of carbon-bearing pellets made from discarded copper slag have been conducted in this paper. They include the influences of reduction coal content, limestone content, industrial sodium carbonate content, reduction temperature, reduction time and layers of carbon-bearing pellets on reduction effect. Finally, the optimum conditions have been obtained.

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Industrial Tests to Modify Molten Copper Slag for

In this article, to improve the recovery of copper from copper slag by flotation process, industrial tests of the modification process involving addition of a composite additive into molten copper slag were conducted, and the modified slag was subjected to the flotation process to confirm the modification effect. The phase evolution of the slag in the modification process was revealed by

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Iron Recovery from Discarded Copper Slag in a RHF Direct

separation process for iron recovery from copper slag, Yang [10] obtained iron powder of 92.05% iron content with an iron recovery rate of 81.01%, and Wang [11] obtained iron powder of 92.96% iron content with an iron recovery rate of 93.49%. Both of their tests have achieved good results. However, the above researches, which are technically feasible, have been done only in the bench test of

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2-Recovery of Copper and Cobalt from Converter Slag with a

Recovery of Copper and Cobalt from Converter Slag with a New Flotation Method Using H2S Copper slag is produced in large amounts in seven copper smelter plants in Chile, and it is estimated that around 4 million tons of slag are disposed every year and another 40 to 45 million tons are historically cumulated [1]. Different slags need aid transformed as by-products clinched alongside

More
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RECOVERY OF COPPER FROM COPPER SLAG AND COPPER SLAG

Recovery of copper from copper slag and copper slag flotation tailings 75by oxidative leaching Table 1. Chemical compositions of the copper smelter slag and the slag flotation tailings Constituent Content (wt.%) Copper Slag Slag Flotation Tailings Cu – total 0.97 0.59 Cu – oxides 0.15 0.06 Cu – sulphides 0.82 0.53 SiO 2 33.75 34.62 Al 2 O 3 3.78 3.93 Fe 2 O 3 8.05 1.10 FeO 33.80 34.44 Fe

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Improving Copper Recovery from Production Slags by

Keywords: slag cleaning, stirring mode, copper slag, submerged arc furnace, stirring reactor Abstract Slags resulting from pyrometallurgical copper processes are important by-products to be controlled in structure and composition. Due to the significant volumes of slag compared with those of the target metal it is mandatory – as already practiced today – to use the slag as a product e.g

More
[randpic]

Recovery of cobalt, nickel, and copper from slags, using

Nickel-copper converter slag 'A'- 100 kVA and 200 kVA. Using converter slag from a nickel-copper plant, tests were carried out, in 1990, on a 100 kVA furnace (operated at 30 kW) and on a 200 kVA furnace (operated at 85 kW), at low additions of reductant (in order to minimize the reduction of iron). The slag had a composition of Co: 0.45%, Cu: 3%, Fe total: 47%, Ni: 3.5%, and S: 3%. These tests

More
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Management of copper pyrometallurgical slags: giving

materials from copper slag. Recovery of copper, molybdenum, precious metals, silica and iron, that is the most abundant component of the slag, are the goals for this research. Metals, commercial compounds, alloys and different forms of iron oxides for steel industry are proposed products. 544 MOLTEN SLAGS FLUXES AND SALTS Some previous studies have been considered4–5. Among

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