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At the present molten slag from a blast furnace (B.F.) is granulated by impinging much water without any recovery of its much sensible heat (1 823 K), polluting water and atmosphere. To solve these problems, we studied the dry granulation of molten slag by Rotary Cup Atomizer (RCA), in which the influence of the rotating speed of the RCA on ...
Feb 05, 2015· Mizuochi T, Akiyama T, Shimada T, Kasai E, Yagi J (2001) Feasibility of rotary cup atomizer for slag granulation. ISIJ Intern 41(12):1423–1428. Article Google Scholar 45. Kashiwaya Y, In-Nami Y, Akiyama T (2010) Mechanism of the formation of slag particles by the rotary cylinder atomization. ISIJ Intern 50(9):1252–1258
Using molten BF slag as their working medium, Mizuochi et al. [52] carried out experiments using a rotary cup atomizer with air blasting and found that droplets smaller than 1 mm can be obtained ...
A rotary liquid metal atomizer is positioned to receive a stream of molten metal on the top thereof. The atomizer is formed as a hollow disc means having a concave top surface and mounted for rotation at high RPM's on the top of a hollow drive shaft. A circular coolant baffle is located in the hollow disc means having radial passageways on the top and bottom thereof and connected at the outer ...
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As with all rotary atomizers, almost monodisperse droplets can also be produced with a cup atomizer over a wide operating range. This means the drops all have an almost identical droplet diameter. The monodisperse droplet size can even be adjusted in certain areas in …
Blast furnace slag (BFS, see Wikipedia ground granulated blast-furnace .... a 15% charge of air-cooled steelslag pebbles in the rotary kiln feedstock mix, has... Read more Rotary Furnace Suppliers | Rotary Melting Furnace Manufacturers ...
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CABINET BLAST PRODUCTION RATES Below is an estimate of abrasive delivery rates per hour and sq. ft. of blast area in sq. ft. per minute with various orifice I.D.ʼs and 80 p.s.i.
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Apr 02, 2013· The main challenge is to granulate the slag at a high cooling rate while the heat is also being recovered. This paper describes the hot experiments where a rotating multi-nozzle cup atomizer (RMCA) is used to atomize the molten blast furnace slag without water impingement. The atomization process shows good agreement with Rayleigh's mechanism.
Mar 15, 2020· A novel atomization process based on a rotary cup atomizer (RCA) was proposed to manufacture iron powders using semisteel as the raw material. To achieve rapid cooling of iron droplets and efficient separation of iron powders from cooling water, a circle of water curtain was set around the RCA in the experimental setup.
Aug 09, 2014· A rotary-cup, air-blast atomizer was built, with a cup of 100 mm diameter and a speed range of 500 -1500 rev/min. The slag flow rates used in the tests varied from 0.2 kg/sec to 0.5 kg/sec. The tests were restricted to duration of about 2.5 min because of the limited capacity (around 30 kg) of the laboratory slag melting furnace.
A circle of water curtain was set around a rotary cup atomizer. The iron powders and hot vapor produced in this new process can be applied in the reducing and leaching steps of sulfate process, respectively, which is propitious to cut down the manufacturing cost of titanium dioxide and realize optimized resource allocation and highly effective ...
Slag is a potential resource of energy and materials because it contains a lot of elements and is at the high temperature of around 1500°C when exhausted.The RCA (Rotary Cup Atomizing) method is ...
The results showed that the rotary cup atomizers with either the inner angle ranging from 40° to 60° or the depth ranging from 10 mm to 12 mm can produce slag film of 0. 300 mm. The rotary cup ...
The casting process has been used for thousands of years for making sculpture, jewelry, tools and more. Here at PMC Supplies, we specialize in offering tools for both melting down precious and non-precious metals and pouring them into a mold. We carry graphite, steel, and cast iron molds to mention a few. These molds are offered in a variety of ...
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A coating applicator has a rotary atomizer detachably mounted directly on a front end of a rotor of an air driven turbine for convenient removal and cleaning of the atomizer. The rotor and atomizer are forward of bearings that rotatably mount a shaft for supporting the rotor, which isolates the bearings from coating material delivered to the atomizer, and turbine exhaust air augments shroud ...
At the present molten slag from a blast furnace (B.F.) is granulated by impinging much water without any recovery of its much sensible heat (1 823 K), polluting water and atmosphere. To solve these problems, we studied the dry granulation of molten slag by Rotary Cup Atomizer (RCA), in which the influence of the rotating speed of the RCA on slag drop size was mainly examined.
Oct 28, 2020· According to previous research on the atomization process using a rotary cup atomizer, the shape of the rotary, especially the cup depth and slope angle of the inner wall, has an significant ...
The difficulties of molten metallurgical slag heat recovery caused by low thermal conductivity and high enthalpy are analyzed.Centrifugal granulation is an environment-friendly process in treating the slag. The existing researches on centrifugal granulation are concentrated in the shape, size and mass distribution of slag particles. The relations between flight distance of slag, divorced speed ...
Based on the granulation technology for high temperature molten blast furnace slag by rotary cup, visualization experiments were conducted by applying water as the substitute for slag and a rotary ...
Jan 25, 2017· As with atomizer design for the treatment of blast furnace slag rating up to 10,000 t/d, the required atomizer radius decreased to 0.45 m by employing cup-like atomizer instead of disc-like atomizers at 1500 rpm. And the cup-like atomizers provided a …
Jul 31, 2012· Blast furnace (BF) slag, which is the main byproduct in the ironmaking process, contains large amounts of sensible heat. To recover the heat, a new waste heat-recovery system—granulating molten BF slag by rotary multinozzles cup atomizer and pyrolyzing printed circuited board with obtained hot BF slag particle—was proposed in this study.
Due to these properties, bauxite-containing refractories are commonly used in: linings of rotary kilns for the manufacture of Portland cement, dolomite and lime; combustion chamber linings for boilers; in the ceramic industry as glass tank blocks, furnace parts, regenerator walls and checkers; in the steel ladles metals industry for center ...
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