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目前显示的是 四月, 2017的博文

There are two primary technologies using the Hall–Héroult process

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There are two primary technologies using the Hall–Héroult process: Söderberg technology and prebake technology.
In Söderberg or self-baking anodes using cells, there is a single anode per electrolysis cell Aluminum smelter equipment. The anode is in a frame and as the bottom of the anode turns mainly into CO2 during the electrolysis the anode loses mass and being amorphous it slowly sinks within its frame. More material to the top of the anode is continuously added in the form of briquettes made from coke and pitch. The lost heat from the smelting operation is used to bake the briquettes into the carbon form required for reaction with alumina. This baking process in Söderberg anodes during electrolysis releases more carcinogenic PAHs and other pollutants than electrolysis with prebaked anodes and partially for this reason prebaked anodes using cells have become more common in aluminum industry. More alumina is added to the electrolyte from the sides of the Söderberg anode after the cr…

Demise of Northwest aluminum industry

Driving east along state Highway 14 these days, you see water pouring out of Columbia River dams. It is already a high water year with much of the runoff from our heavy mountain snowpack yet to come. It is part of our “feast or famine” weather cycle. As you pop over the hilltop near the Maryhill Museum, you look down to see John Day Dam with its floodgates open spilling massive amounts of water. Then you see remains of the razed Goldendale Aluminum Co. smelter next to the dam. That plant once accounted for 1,300 jobs, $40 million in personal income and $2 million in Klickitat County taxes. Now, you just see concrete pads, a water tower and a small office. Twenty years ago, Goldendale was a vibrant plant. It was one of 10 “reduction works” melting imported ore into aluminum in Washington, Oregon and Montana. Those plants were not only critical to our region’s economy, but they were vital to our nation’s World War II effort. The first plants at Vancouver and Longview supplied the light-weig…

Vacuum ladle for taking aluminum melt from electrolyzer

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Vacuum ladle for taking aluminum melt from electrolyzer
1.Vacuum Ladle Description
As a transfer equipment for metallurgical industry, vacuum ladle is a larger sealed container with steel shell lined with refractory material. Relying on its own negative pressure generating system, it can generate a certain degree of vacuum in the ladle to extract and transfer the finished smelting liquid from cell, such as aluminum, magnesium and other metals.

2.Vacuum Ladle Structure
Vacuum ladle is mainly composed of suctorial aluminum tube, jet exhauster,gearing, and heat insulation layer. The ladle is designed into detachable headed column and structure just like teapot ladle, with input and output on both sides. Making the ladle lift and transport convenient, and the heat loses slowly.It can be operated by manual or electrically-operated. The two modes can be interconvertibled with a clutch ,which assure the liquid aluminum can be poured out in emergency.


3.Vacuum Ladle Features
1.the cover will …

Rio Tinto Alcan inaugurates its leading-edge AP60 aluminium smelter in Canada

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MONTREAL, Jan. 16, 2014 /CNW Telbec/ - Rio Tinto Alcan inaugurated the US$ 1.1 billion Arvida Aluminium Smelter, AP60 Technology Centre, in Saguenay-Lac-St-Jean, Quebec. The new plant has an installed capacity of 60,000-tonnes of aluminium and is the most technologically advanced aluminium smelter in the world.

Jacynthe Côté, Chief executive of Rio Tinto Alcan said: "Rio Tinto Alcan is very proud to inaugurate the new Arvida Aluminium Smelter, AP60 Technology Centre. It is an honour to share this achievement with the men and women who made it possible - our employees. Today's milestone is the result of years of work by our Research and development teams, particularly the teams that first conceived, developed and tested the AP60 technology at the Laboratoire de recherche des fabrications (LRF) in France. The innovative new AP60 technology platform will also allow for the development of a series of next generation technologies permitting further improvements in productivity, and…

PROMOTION OF ENERGY-SAVING TECHNOLOGIES, ELECTROLYTIC ALUMINUM INDUSTRY PROFITS OR WILL RISE

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According to the survey, there are many smelters in order to reduce the power consumption, the introduction of new technology and equipment. For example, Henan smelter, Shandong smelter etc electrolyzer part in the production line using the new technology, the electricity cost is reduced by about half a year, the electricity section is expected to reach 500-600 million.
Electrolytic aluminum, which is obtained by electrolysis of aluminum, so the use of electricity, according to the survey, China's annual electricity consumption of electrolytic aluminum accounted for about 6% of the total national electricity consumption, equivalent to the amount of 2-3 Three Gorges power station. Properties of electrolytic aluminum high energy consumption will become the key to the cost, so the promotion of energy saving technology, is bound to the aluminum smelting enterprises and even the whole aluminum market form a huge positive.

Take Henan as an example of an electrolytic aluminum plant, the …