Studies were carried out at R&D, Tata Steel to develop a flow sheet for the recovery of metal from metal–slag mix generated in its charge chrome (ferrochrome with 50–60% chromium) plant, Bamnipal. The studies showed that in the case of the charge chrome plant, crushing of mixed metal and slag to below 10 mm followed by jigging of the −10+1 mm …
Common aluminum dross cold treatment technologies include Gravity concentration, electrical concentration, mechanical crushing and screening method, etc. T. ... 3.The floating dross (salt slag and aluminum dross) generated on the surface of the melt during the transfer, purification and impurity removal of aluminum scraps smelting ...
Four calcium aluminate cement mixes were manufactured from aluminum sludge as a source of calcium oxide and Al 2 O 3 and aluminum slag (dross) as a source of aluminum oxide with some additions of pure alumina. The mixes were composed of 35–50% aluminum sludge, 37.50–48.75% aluminum slag (dross) and 12.50–16.25% aluminum oxide.
Due to its composition and possible reaction with water, saline slag from aluminum recycling processes is classified as a hazardous waste in the European List of Wastes (ELW) 100308 [13], and as such must be deposited in landfills or in secure deposits. Salt cake is an additional by-product that could be recovered provided that the process is ...
After crushing, remove the slag powder. Adding an appropriate amount of slag breaker will react quickly and have good slag properties. The slag treated by it will become quite dry and powdery, which effectively reduces the labor intensity of workers, reduces the loss of aluminum, and ensures the stability of product quality.
The utility model discloses an alumina slag crushing plant which comprises a roller, a shield that is formed by surrounding the middle section of the roller and is provided with an opening at the top, spray headers positioned at the upper part and the lower side part of the roller in the shield, a water storage tank arranged at the opening of the lower part of the shield, a drive device ...
Slag is a nonmetallic byproduct from the production of iron. Trace amounts of chemicals may be detected ... Usage: Cutting, crushing or grinding hardened cement, concrete or other crystalline silica- ... Incompatibility: Slag is incompatible with acids, ammonium salts and aluminum metal. Slag and cement dissolves in hydrofluoric acid, producing ...
The application relates to the technical field of slag treatment equipment, and particularly discloses aluminum slag treatment equipment which comprises a support frame, a feed box, a first crushing roller, a second crushing roller and a squeeze roller; the feed box is arranged on the support frame; the first crushing roller and the second crushing roller are both rotationally …
The present invention relates to the technical field of battery recycling. Disclosed are a recycling method for controlling the particle size of aluminum slag and an application of the recycling method. The recycling method comprises the following steps: crushing and sieving a positive electrode plate of a waste power battery, and then adding liquid nitrogen for crushing to obtain …
The utility model belongs to the technical field of processing of aluminum silicate fiber cotton, in particular to an aluminum silicate fiber cotton crushing and slag ball separating device, which firstly crushes the fiber cotton through a fiber crusher, the fiber crusher is internally provided with a crushing blade made of alloy materials, the fiber cotton can be fully crushed, the crushed ...
A method of recovering a metallic aluminum from an aluminum-containing slag of an aluminum smelting process. In this method, the slag is crushed a number of times with each crushing product being separated by a screening off removing the metallic aluminum before the next crushing stage. Water-soluble components are then removed from the slag by leaching and …
The studies showed that in the case of the charge chrome plant, crushing of mixed metal and slag to below 10 mm followed by jigging of the −10+1 mm material and tabling of the −1 mm material would help recover 10 tpd of metal from the 18 tpd of mixed metal. Based on the studies, a plant is now operational at the Ferro-Alloy Plant (FAP ...
Mechanical agitating and squeezing of hot aluminum slag by adding some fluxes (e.g. NaCl) Generation of dust and salt vapor, 30–50 wt% of metallic aluminum flows to the secondary aluminum dross ... Pre-treatment of aluminum dross is required, such as crushing, grinding, sizing, and water washing. The yield of Al 2 O 3 at the range of 71%–95 ...
After separation of the aluminum metal from the material by crushing and screening, the waste is treated with water to separate the soluble and insoluble fractions. ... The synthesis of calcium aluminate cement mixes from aluminum sludge as a source of calcium oxide and aluminum slag as a source of aluminum oxide has been studied by Ewais et al ...
The iron/steel slag processing flow is schematically shown in Fig. 2. Steelmaking slag is subjected to the following four process-es: ① solidify and cooling of the hot molten slag, ② crushing and magnetic separation treatment of the slag to recover the metal iron, ③ crushing and classification of the slag for grain size adjustment
Four calcium aluminate cement mixes were manufactured from aluminum sludge as a source of calcium oxide and Al 2 O 3 and aluminum slag (dross) as a source of aluminum oxide with some additions of pure alumina. The mixes were composed of 35-50% aluminum sludge, 37.50-48.75% aluminum slag (dross) and 12.50-16.25% aluminum oxide.
Aluminum recycling generates large amounts of hazardous wastes, known as salt slags, consisting mainly of oxides, metallic aluminum, and salt fluxes. Water leaching is a common technique used for salt removal, being a decisive operation due to water usage and the need to achieve sufficient salt recovery. In this study, water leaching tests under varied …
process for salt slag recycling starts with crushing and screening to remove coarse metallic aluminum, which is fed back to the melting furnace. Aqueous leaching to dissolve the salts (mostly NaCl and KCl) is then applied to the finer fraction, and is typically carried ... Optimization of Water Leaching of Chlorides from Aluminum Salt Slag ...
Slag is not only required in the smelting process in the furnace, but also indispensable for secondary refining of steel, hot metal pretreatment, and steel continuous casting. The name of "slag" is not precise enough, but it is still being used. Slag that has been melted into a liquid state at high temperature is called dross.
When it has fully solidified and then cooled somewhat, the slag (commonly known as air-cooled blast furnace slag or ACBFS) is excavated and transported away for further treatment (such as magnetic removal of any iron, or crushing and screening). Slag pits beside the furnace are most convenient but where space is restricted the liquid slag can ...
b) Crushing of oxidic skin by bath movement. c) Sinking and floating of oxidic particles. d) Conglomeration of oxidic particles. e) Interspace filling up by metallic aluminum. f) Inside oxidation of dispersed aluminum. g) Skimming of dross from melt bath surface. h) Metallic aluminum drip off and follow-up oxidation of solids during dross cooling