• Quick Search:

concrete grinding platinum

Comments

A Method of High-quality Silica Preparation from Copper

High-quality silica was prepared from copper smelting slag through a method of in situ modification. The effects of the addition of an amount of polyethylene glycol-6000 as a modifier, the

get price

A Method of High-quality Silica Preparation from Copper

2020-5-11  High-quality silica was prepared from copper smelting slag through a method of in situ modification. The effects of the addition of an amount of polyethylene glycol-6000 as a modifier, the modification temperature and the modified endpoint pH on the particle size and specific surface area of the silica were systematically studied. It has been shown that the particle size, specific surface area

get price

(PDF) Investigating the Effects of Copper Slag and Silica

The use of copper slag as a partial replacement of cement is an effective method of pollution reduction and conservation of resources, since it reduces cement use.

get price

STUDY ON COPPER SLAG AND MICRO SILICA EFFECTS

2017-8-19  copper slag quantity, whereas a rapid increase in workability with an increases of copper slag content. An addition of copper slagup to 50% as sand replacement gave comparable strength when compared with controlled mix. Hence, further increments of copper slag resulted in reduction of strength due to increase of free water content in mix.

get price

Separation of silicon and iron in copper slag by

2020-9-7  Approximately 2.0–3.0 t of copper slag (CS) containing 35%–45% iron is generated for every ton of copper produced during the pyrometallurgical process from copper concentrate. Therefore, the recovery of iron from CS utilizes a valuable metal and alleviates the environmental stress caused by stockpile. In this paper, a new method has been developed to realize the enrichment of iron in CS

get price

Separation of silicon and iron in copper slag by

2020-8-31  Copper slag (CS) is a byproduct of the pyrometallurgical production of copper. According to statistics, approximately 40−50 million tons of CS are produced annually worldwide [1, 2]. Approximately 35%−45% iron and 25%−35% silica exist in CS, whereas the concentrates of other ingredients of aluminum, calcium, magnesium, zinc

get price

Separation of silicon and iron in copper slag by

2020-8-8  The silica was converted into free quartz solid solution (QSS) and cristobalite solid solution (CSS). QSS and CSS are readily soluble, whereas metallic iron is insoluble, in NaOH solution. Under optimal leaching conditions, a residue containing 87.32% iron is obtained by decreasing the silica content to 6.02% in the reduction roasted product.

get price

Recovery of Copper from Reverberatory Copper Slag and

2016-6-8  Leaching is optimum if silica gel-free solutions and good filterable residue are obtained. The copper slag contains a high content of silica and iron. The solution final pH is the compared with the traditional commercial method which requires high temperature vapourization of silica. Nano silica, silica fines and micro silica are added

get price

ISASMELT TM SLAG CHEMISTRY AND COPPER LOSSES

2015-9-7  It was established previously the amount of silica in the slag in terms of the silica to iron ratio (SiO 2 /Fe). At silica to iron ratio of less than 0.77, the magnetite levels get very high. At the opposite extreme, if the silica to iron ratio is more than 0.95, the magnetite level in the slag gets so low that it becomes difficult for the

get price

Characteristics and utilisation of copper slag—a review

2003-11-1  Air-cooled copper slag has a black colour and glassy appearance. The specific gravity varies with iron content, from a low of 2.8 to as high as 3.8. The unit weight of copper slag is somewhat higher than that of conventional aggregate. The absorption capacity of the material is typically very low (0.13%).

get price

A Method of High-quality Silica Preparation from Copper

High-quality silica was prepared from copper smelting slag through a method of in situ modification. The effects of the addition of an amount of polyethylene glycol-6000 as a modifier, the modification temperature and the modified endpoint pH on the particle size and specific surface area of the silica were systematically studied. It has been shown that the particle size, specific surface area

get price

Investigating the Effects of Copper Slag and Silica Fume

Workability, strength, durability, economic considerations, and attention to sustainable development issues are some crucial factors in designing an appropriate mix. The use of copper slag as a partial replacement of cement is an effective method of pollution reduction and conservation of resources, since it reduces cement use. In addition, silica fume is used in combination with copper slag

get price

STUDY ON COPPER SLAG AND MICRO SILICA EFFECTS

2017-8-19  copper slag quantity, whereas a rapid increase in workability with an increases of copper slag content. An addition of copper slagup to 50% as sand replacement gave comparable strength when compared with controlled mix. Hence, further increments of copper slag resulted in reduction of strength due to increase of free water content in mix.

get price

Copper Slag Grit Producer of Abrasives

Copper Slag Grit ASGRIT ® for use as a blasting medium containing less than 0.5% free silica and 25ppm of chloride and for disposal based on negligible leaching out of heavy metals. Every batch of the finished product is sieve analyzed to ensure that the

get price

Recovery of Copper from Reverberatory Copper Slag and

2016-6-8  Leaching is optimum if silica gel-free solutions and good filterable residue are obtained. The copper slag contains a high content of silica and iron. The solution final pH is the compared with the traditional commercial method which requires high temperature vapourization of silica. Nano silica, silica fines and micro silica are added

get price

Separation of silicon and iron in copper slag by

2020-8-8  The silica was converted into free quartz solid solution (QSS) and cristobalite solid solution (CSS). QSS and CSS are readily soluble, whereas metallic iron is insoluble, in NaOH solution. Under optimal leaching conditions, a residue containing 87.32% iron is obtained by decreasing the silica content to 6.02% in the reduction roasted product.

get price

ISASMELT TM SLAG CHEMISTRY AND COPPER LOSSES

2015-9-7  It was established previously the amount of silica in the slag in terms of the silica to iron ratio (SiO 2 /Fe). At silica to iron ratio of less than 0.77, the magnetite levels get very high. At the opposite extreme, if the silica to iron ratio is more than 0.95, the magnetite level in the slag gets so low that it becomes difficult for the

get price

Ferro-silico-manganese production from manganese ore

2020-11-1  The copper smelting slag used in this study was supplied by PT. Smelting, Gresik, East Java, Indonesia. The manganese ore was obtained from East Nusa Tenggara Province, Indonesia. The slag was ground using a ball mill, sieved to obtain grain size of less than 65 mesh (210 µm), and then dried at 135 °C for 24 h.

get price

Crystallization Behavior of Copper Smelter Slag During

2015-5-19  Copper slag is composed of iron silicate obtained by smelting copper concentrate and silica flux. One of the most important criteria for the utilization of this secondary resource is the recovery of iron from the slag matrix to decrease the volume of dumped slag

get price

Characteristics and utilisation of copper slag—a review

2003-11-1  Air-cooled copper slag has a black colour and glassy appearance. The specific gravity varies with iron content, from a low of 2.8 to as high as 3.8. The unit weight of copper slag is somewhat higher than that of conventional aggregate. The absorption capacity of the material is typically very low (0.13%).

get price

Investigating the Effects of Copper Slag and Silica Fume

Workability, strength, durability, economic considerations, and attention to sustainable development issues are some crucial factors in designing an appropriate mix. The use of copper slag as a partial replacement of cement is an effective method of pollution reduction and conservation of resources, since it reduces cement use. In addition, silica fume is used in combination with copper slag

get price

Elemental properties of copper slag and measured

2017-8-1  Copper slag is widely used in the abrasive blasting industry due to its favorable physical characteristics such as hardness, abrasion resistance, high density, and low free silica content. Copper slag is produced during the smelting process and converting steps of pyrometallurgical production of copper.

get price

Separation of silicon and iron in copper slag by

2020-8-8  The silica was converted into free quartz solid solution (QSS) and cristobalite solid solution (CSS). QSS and CSS are readily soluble, whereas metallic iron is insoluble, in NaOH solution. Under optimal leaching conditions, a residue containing 87.32% iron is obtained by decreasing the silica content to 6.02% in the reduction roasted product.

get price

Evaluating the alkali-silica reaction in alkali-activated

Alkali-Silica Reaction (ASR) in Alkali-Activated Copper Slag (AACS) mortar binder was investigated with reference to Ordinary Portland Cement (OPC) mortar using the accelerated mortar bar method

get price

Copper slag: optimization of productivity and

2007-1-1  Copper slag is a by-product of the copper smelting industry. The molten slag from the smelter is quenched in water and quick cooling of this slag results in amorphous, non-crystalline particulates. Some of the characteristics of copper slag such as hardness, high density, and low free silica content are useful in removing heavy rust and

get price

Crystallization Behavior of Copper Smelter Slag During

2015-5-19  Copper slag is composed of iron silicate obtained by smelting copper concentrate and silica flux. One of the most important criteria for the utilization of this secondary resource is the recovery of iron from the slag matrix to decrease the volume of dumped slag

get price

COPPER SOLUBILITY SiO -CaO-FeO SLAG EQUILIBRATED

2018-9-8  type of slag utilizing lime or lime and silica fluxes. Therefore, the copper solubility in the wide range of slag composition of CaO-SiO2-FeO x system is a major point of interest. Copper solubility in the slag equilibrated with copper matte phase is difficult for evaluation due to system complexity and limited number of available experimental

get price

Evaluating the alkali-silica reaction in alkali-activated

2020-8-30  Abstract. Alkali-Silica Reaction (ASR) in Alkali-Activated Copper Slag (AACS) mortar binder was investigated with reference to Ordinary Portland Cement (OPC) mortar using the accelerated mortar bar method as per ASTM C1260. The ASR expansion in AACS mortar bars were determined with varying alkali content (4, 6, 8 and 10%) and silicate modulus

get price

Base metals recovery from copper smelter slag by

Silica gel-free solutions containing copper, cobalt and zinc were produced, so that pulp filtration could be easily carried out. The dissolved base metals were successfully extracted from solution by solvent extraction using kerosene Shellsol D70 as diluent. Copper

get price

PROPERTIES AND EFFECTS OF COPPER SLAG IN CONCRETE

2016-4-11  10 mm), sand and copper slag are 7.10, 6.77, 2.94 and 4.06 respectively. Table 3.2 to 3.3 shows the fineness modulus of 20 mm, 10 mm coarse aggregates, sand and copper slag respectively. Table 2.2 Sieve Analysis of Coarse Aggregate, Fine Aggregate and Copper Slag method

get price