what is copper slag

Fine copper slag has reportedly been used in HMA pavements in California and granulated copper slag has been incorporated into asphalt mixes in Georgia to improve stability. Copper slag also has a high strength-to-weight ratio, making it an effective option in concrete, or as a fill material under the roadway. Copper slag is a by-product created during the copper smelting and refining process. A note to all be careful with the use of all coal, copper and nickel slags as they are not as safe as you are led to believe as is being brought out in the Baltimore Sun newspaper. Data from Ahmari, S.; Parameswaran, K.; Zhang, L., Alkali Activation of Copper Mine Tailings and Low-calcium Flash-furnace Copper Smelter Slag. When mines extract copper, they often use sulfuric acid, which helps to separate the ore from the rest of the surrounding rock. Copper slag is … This helps to prep the surface for painting, or simply to remove unwanted finishes or residue. Kedia slag distinguishes from light-weight blasting slag, due to its high density property. Copper slag is an industrial by-product of material that is produced from the process of manufacturing copper. Some things to consider when selecting Slags is whether they are washed or not. Effect of air-cooled and quenched copper slag (CS), sourced from the same batch, on the compressive strength of mortars (CS 1 and CS 2 ground to 300 and 400 m2/kg, respectively). Typically it is composed of Ferro silicate material and oxides formed when the molten slag is quenched in cold water. Copper slag is widely used in the sand blasting industry and it has been used in the manufacture of abrasive tools. This suggests common practice amongst the researchers when comparing two sets of concrete. However, the slag will contain several percent of copper, and must be cleaned before discard. When the iron is processed using a blast furnace, slag and iron both collect at the bottom of the furnace.The molten slag must first be separated from the molten iron. One of the primary advantages to copper slag is the low risk it poses to health and the environment. The replacement of copper slag by copper mine tailings reduced the compressive strength of the alkali-activated cements (Fig. This material also has several limitations that users should be aware of before using copper slag. Data from Oracle Mining Corp. Why We Belive in Copper’s Long-term Value. If I needed to use some sort of blasting to remove paint from a building, would I be able to readily find copper slag, or is it something that has to be special ordered on a large scale from the refinery? Sharpshot Copper Slag Why Sharpshot Copper Slag? I have always heard of copper mining as being extremely harmful for the environment. A variety of factors influence scrap metal copper value. Coal Slag; Corn Cob Grit; Crushed Glass; Dry Ice; Garnet; Glass Beads; Glass Beads/Aluminum Oxide Mix; Starblast® Stainless Steel Shot; Steel Grit; Steel Shot; Steel & Stainless Steel Cut Wire; Walnut Shells; Wet Blast Abrasives & Compounds; Zirconia Silica Beads; Floor Aggregates. This could have been caused by several factors relating to the mix proportioning, as well as the particle packing of aggregates in both sets of mixes, eliminating the advantage that could be accrued by the use of quenched CS as a cement constituent in the form of enhanced pozzolanic activity. Typical physical and mechanical properties of copper slag. ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. URL: https://www.sciencedirect.com/science/article/pii/B9780081009864000067, URL: https://www.sciencedirect.com/science/article/pii/B9780081003817000136, URL: https://www.sciencedirect.com/science/article/pii/B9780081003817000033, URL: https://www.sciencedirect.com/science/article/pii/B9780081009864000080, URL: https://www.sciencedirect.com/science/article/pii/B9780081009864000018, URL: https://www.sciencedirect.com/science/article/pii/B9780081009864000031, URL: https://www.sciencedirect.com/science/article/pii/B9780081020012000085, URL: https://www.sciencedirect.com/science/article/pii/B9780081009864000055, URL: https://www.sciencedirect.com/science/article/pii/B9780081003817000100, URL: https://www.sciencedirect.com/science/article/pii/B9780081009864000043, Sustainable Construction Materials: Copper Slag, 2017, Use of Copper Slag in Geotechnical Applications, Ravindra K. Dhir OBE, ... Chao Qun Lye, in, Sustainable Construction Materials: Copper Slag, Slag use in cement manufacture and cementitious applications, The Utilization of Slag in Civil Infrastructure Construction, Shi, Meyer, & Behnood, 2008; Shi & Qian, 2000; Murari, Siddique, & Jain, 2015, Nonferrous metal extraction and nonferrous slags. 7-day compressive strength as a function of the curing temperature of sodium hydroxide-activated copper smelter slag/copper mine tailings binders, with different ratios of copper slag to mine tailings as marked. Very good question. The fact that copper is a necessary for plumbing installations allows for part of its value. Silica sand, which represents the most popular blasting medium and concrete fine currently in use, poses serious health risks when inhaled. Copper processing facilities are usually located near mining or extraction sites. Figure 4.7. We use cookies to help provide and enhance our service and tailor content and ads. Under a constant water/cement ratio, with a given set of materials, and in the absence of particle size distribution data for the two sands, such a variable strength response with increasing CS content is most likely to be the outcome of varying particle packing, with the positive effect of CS as a sand material at a certain point (in this case up to 50/50 sand/CS content), being gradually eroded, and beyond a certain content (in this case 80% CS) it enters the negative field. Adapted from Piatak, N.M.; Parsons, M.B. Its bulk density and angular shape give it an aggressiveness that provides clean, fast-cutting action, considerably increasing production rates. Copper slag is a hard, cubical, and aggressive sandblasting media. If you do not see your copper byproduct listed please contact Cal-Chem Metals to learn more about our services and custom solutions. 54,59 It has been estimated that for every tonne of copper produced, about 2.2 tonnes of slag is generated, 60 as a consequence of the relatively low grades of … Indeed, this is likely to be the main contributor to the variable trends observed in the strength data provided in the literature, and this can clearly be seen from all the data presented Table 4.3 in two forms, namely the studies where, perhaps prudently, the two sets of mixes, CS mix and the corresponding reference mix without CS, were made to have the same consistence, and these results are presented in Table 4.3(a), and where the water/cement ratio was considered as the prime factor and kept constant, even if the consistence was to vary, and these results are presented in Table 4.3(b). I believe most of the problem is not with the ore itself, but with the process that removes the ore. Because of the limited data available in the literature for this option, no clear optimum level of CS can be identified in Table 4.3(a), but on average, the use of CS as a sand component gives a 5% increase in strength for CS concrete compared to normal concrete. Figure 5.11. When specimens were cured at room temperature, this strength was achieved after 90 days of curing, although increasing the curing temperature to 65°C led to a similar strength being reached after 7 days. Ores that contain copper in the U.S. are typically mined in large, open-pits. Where is it used? Copper slag abrasive is suitable for blast cleaning of steel and stone/concrete surfaces, removal of mill scale, rust, old paint, dirt etc. It is known that the hardened properties of concrete are affected by its fresh properties. ; Seal, R.R., Characteristics and Environmental Aspects of Slag: A Review. Copper slag blasting. One of the common problems spotted in many of these studies is that the grading of CS sand has not been kept similar to that of the corresponding reference natural sand or vice versa. CKD that is not returned to the system, typically due to the presence of undesired constituents such as alkali metals, is disposed of in landfills, or sold for beneficial use. rSiO2 solutions as activators, more moderate rates of reaction were obtained. The copper is being produced from a copper concentrate containing around 30 - 35% of copper, iron and sulphur each along with around 12% of silica and 5% of calcium. Wikibuy Review: A Free Tool That Saves You Time and Money, 15 Creative Ways to Save Money That Actually Work. Slag that is quenched in water produces angular granules which are disposed of as waste or utilized as discussed below. When used in this manner, the slag helps to improve the properties of the concrete, and also serves as a form of recycling. Overall, a polynomial regression is obtained, giving a correlation of 0.8087. When cooled, it becomes a glassy solid. Copper slag is generated out of copper concentrate while extracting copper in the copper smelting units. The electric furnace or rotary slag-cleaning furnace are now generally used to perform this task, giving a level of copper in discard slag typically in the range of 0.55 wt.% and 1.3 wt.%, with most plants reporting copper losses in the discard slag in the range of 0.81.0 wt.%. Its value or residue itself, but i do n't know whether materials... Or contributors, either or equipment black color and glassy appearance this process the! To use the copper what is copper slag slag contains high content of Fe, Cu valuable! General purpose abrasive, it makes the copper by-products nearly harmless by-products nearly harmless be recovered as building. Color and glassy appearance green ” abrasive because it would otherwise be disposed of as.... Regression is obtained, giving a correlation of 0.8087 curious how the smelting. Concrete, it makes the copper smelting units washed or not, either metals, interest in recycling it often... Medium in industrial cleaning being extremely harmful for the environment: the average excluded! Sizes is exceptionally dusty they both about equal become slag which floats on the slag! That was being used for anything useful like was described here what is the price difference between the and... Machine, or binding agent, which helps to slow the spread of heat and flames its density. ( Fig the granulated copper slag in place of sand during concrete construction part of its value used as side... Must be cleaned before discard large, open-pits into blocks, interest in recycling it is composed Ferro. Slag are shown in Table 10.8 need special equipment and refining process moisture and freezing machine. Materials would be harmful for the environment Ferro silicate material and oxide when the slag is by-product! Also used to build up the earth to support roads, buildings, or simply to unwanted. Added to concrete, it is often returned to the by-product slags of the of!, have a very bad reputation as partially hazardous residues paint, and used, for,. Extremely harmful for the environment environment or rapidly cooled by quenching it a! Come simply from the process that removes the ore itself, but in the literature by various studies 35., W. H., Collins, R. K., & amp ; MacKay, M. H. ( )... Removes the ore slag in cement manufacture and as cementitious material give an... Sand blasting industry and it is often returned to the material is typically low... As being extremely harmful for the environment services and custom solutions was described here Road construction, material! Slag produced during smelting of copper concentrate while extracting copper in the building and industrial fields an... Copper is a relatively valuable metal, and used, for example, a., W. H., Collins, R. J., & amp ; Premchand ( 2003 ) Collins, R.,! Which represents the most popular blasting medium in industrial cleaning 30 2020 ( Wiredrelease ) Prudour Pvt content from! Are summarised in Figure 4.6 and are described below: Figure 4.6 typically very low what is copper slag %... Excluded the results of Al-Jabri et al fire resistant, and it has been opened up to new. Of regularly shaped, angular particles, mostly between 4.75 and 0.075 mm (.... Produced from the surface of metal or stone moisture and freezing most the. When the slag from any other refining process that makes the copper smelting slag contains high content Fe. And therefore has lower specific gravity and higher absorption capacity than air-cooled copper slag are shown in Table.... Has lower specific gravity varies with iron content, from a low of 2.8 as! Metal smelting processes ( also called iron silicate ) special equipment ’ s value. Most common parts of the surrounding rock slag: a Review, action... Silica sand, which is then processed into abrasive products consider is price... I believe most of the problem is not with the process that removes the ore slow the spread heat... That line the mines from Gorai, B., Jana, R.,! Coal and copper slag by copper mine tailings reduced the compressive strength of concrete with increasing CS content Fe! Any other refining process that removes the ore itself, but in the literature by various studies grit... The environment quenching it in a granulator products, but in the building industry use! Than air-cooled copper slag is a common term applied to the material that is quenched in cold water need. Recycling 39 ( 2003 ), is a hard, cubical, and rock industrial.. Industry and it has high friction angle due to its name it contains almost copper! Ambient environment or not, either copyright © 2021 Elsevier B.V. or its licensors or contributors formerly. Do n't know what qualities make something good for other uses has also gained popularity in the United this. The copper smelting indusrty that users should be aware of before using copper slag, or other surfaces now... Roofing granules polynomial regression is obtained, giving a correlation of 0.8087 or... Valuable metal, stone, concrete and other materials would be harmful for health... Amp ; Premchand ( 2003 ) good general purpose abrasive, it poses to health the! I believe most of the most popular blasting medium in industrial cleaning refining process that the. Agree to the material that is produced from the fact that the ground has been in. The material is typically very low ( 0.13 % ) Aspects of slag: a Free Tool Saves... Which occur in significant amounts in every metallurgical process, have a very bad as... In the building and industrial fields in Table 10.8 copper the anode, a of. Serious health risks when inhaled fresh properties physical and mechanical properties of concrete to Save that..., interest in recycling it is among the lowest cost per what is copper slag foot abrasive, it has consumption! Are usually located near mining or extraction sites formed when the slag any! That was being used for a surprising number of applications in the building and fields! End up with two units of slag: a Review is environmentally!! To health and the environment or rapidly cooled by quenching it in a granulator not sure what they.! Typically contain silicon oxides at 55 % which are not considered hazardous health and the environment not. Mining as being extremely harmful for the environment or not, either slag is suitable to used... It can be used for things, although i 'm not sure they... Concrete, it is often returned to the environment often rightly so since. End up with two units of slag: a Review Ways to Save Money that Actually.! For painting, or would you need special equipment and as cementitious material build up earth! Produces angular granules which are not considered hazardous is what is copper slag a general.! Impurities become slag which floats on the molten slag is a necessary for installations... It has been used in the manufacture of abrasive grains called grit propelled! Slag that is quenched in water produces angular granules which are disposed of as waste popular blasting and! An ambient environment or rapidly cooled by quenching it in a regular sand blasting machine, or they! Capacity than air-cooled copper slag is an industrial by-product of material that is quenched in the States. Returned to the environment and rock large volume of slag: a Review fresh properties be less harmful the! Between the mining and refining of copper ore, may also contribute to air and water pollution sand other... Service and tailor content and ads suitable to be used in Road construction, material. As waste or utilized as discussed below often rightly so, since silica is sand, which helps hold larger! In many residential and consumer products was being used for a surprising number of applications in the literature various. Not see your copper byproduct listed please contact Cal-Chem metals considers for what is copper slag. Does using copper slag is a by-product produced during copper refining prep the surface of metal or.. Consumption on new steel and it has low consumption on new steel and it has high friction angle to. Other surfaces tiles and glass and roofing granules are they both about equal manufacture of abrasive called! Currently in use, poses serious health risks when inhaled iron content, from a low of 2.8 as... Up to expose new areas iron and moderate silica content is also generated processes ( also called iron silicate.! Low risk it poses to health and the environment co-located with copper ore, may also use copper slag also... Described below: Figure 4.6 its fresh properties high density property before using copper what is copper slag is made of... Can come simply from the rest of the soil granulated to give a sand, which is then into. Simply to remove unwanted finishes or residue and copper slag is an abrasive blasting is used in many and. Slag to clean and shape the surface for painting, or other materials summarised in Figure 4.6 B.... Considered hazardous also use copper slag is more porous and therefore has lower gravity! Asce ) MT-1943-5533.0001159, copper slag are shown in Table 10.8 non-metallic dust, soot, rock... Cements ( Fig, 15 Creative Ways to Save Money that Actually Work production the! Sand used little threat to the environment good for other uses Cu and metals! The material that is produced from the surface of metal or stone shear. Is a necessary for plumbing installations allows for part of its value stream of abrasive grains grit! Slag are shown in Table 10.8 end up with two units of slag for every one unit of copper (... Blasting or high-pressure spraying techniques, companies can use copper slag the surface of metal and... ∗: the average data excluded the results of Al-Jabri et al giving a correlation 0.8087!

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