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3 comments
Member

Join Date: Sep 2006
Posts: 5

Baking furnace for carbon collar

11/11/2006 12:24 AM

Hi Guys,

We are planning to manufacture Carbon collar with inter locking (2 half ring with male-female inter locking, form a Ring.OD:245MM, ID: 145MM)

Petroleum coke and recycled carbon from used anodes are mixed with liquid pitch. This

mixture is heated to 160°C until it forms a hot paste. It is then cooled to 115°C and

hydraulically pressed or vibrated in a mould to form Collar ring.

To improve strength of these rings we need to Bake it in baking furnace, where

they are baked at temperatures of up to 1,150°C in a pre-heating, firing and cooling

cycle.

Can any one help me to find baking furnace or help me to design it with temperature .graph.cycle time with detail temp. graph for preheating,firing,cooling cycle.holding time.etc..Usually practise in aluminium smelter's carbon paste plant is to bake it in 1150 °C in a pre-heating, firing and cooling cycle .

I enjoy idea sharing with all members of CR4.

Regards

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Power-User

Join Date: Aug 2006
Location: Adirondacks of NYS
Posts: 123
Good Answers: 5
#1

Re: Baking furnace for carbon collar

11/12/2006 10:38 AM

Smelters use a ring furnace to make pre-baked anodes. The ovens are arranged in a ring shape, for continuous a cycle of filling the oven chamber, preheating the chamber, firing the chamber, cooling the chamber and removing the baked anodes from the chamber. The furnace flues allow the firing frames to be Leap Frog-ed over one another, past a newly filled oven chamber, starting it into the cycle. The draft/cooling frames follow, leapfrog over chambers that have finished firing and starting the cooling cycle.When all the frames are past, the chamber is emptied and reloaded for the next time the frames come around. In this case you move the firing and draft equipment around the furnace and the product remains stationary.

To build a ring furnace and related pollution control equipment will be costly. Your parts so small and the required cycle so similar, maybe you could rent space at a smelter ring furnace. They have the whole process under control and you could bake dozens of pieces in the space of just one anode. You could run batches of parts to meet your needs without the investment. You will have enough to do building the grinding, classifying and mixing plant, as well as a press to form the parts, without worrying about a furnace. I have worked in engineering for a primary smelter so I know about what you are looking for.

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Member

Join Date: Sep 2006
Posts: 5
#2
In reply to #1

Re: Baking furnace for carbon collar

11/12/2006 11:53 AM

Thankyou.

Guest
#3

Re: Baking furnace for carbon collar

11/14/2006 3:14 AM

Hi,

Sorry,I have no experience on furnace.

But further your question regarding mixing equipment, some of us aswered with solution and manufacturer adress.

Did you find a solution?

Do you need additional help?

Regards,

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