SU114403A1

SU114403A1 - The method of melting metals in the working space of fiery furnaces and device for its implementation

Info

Publication number: SU114403A1
Application number: SU368417A
Authority: SU
Inventors: Н.М. Куницын; И.С. Назаров
Original assignee: Н.М. Куницын; И.С. Назаров
Priority date: 1949-05-04
Filing date: 1949-05-04
Publication date: 1957-11-30

Description

В существующих плавильных печах передача тепла от факела пламени к ванне происходит в основном за счет излучени . При таком способе теплопередачи, интенсивность печи топливом и температура пламени ограничиваютс огнеупорностью кладки.In existing smelting furnaces, heat transfer from the flame to the bath occurs mainly due to radiation. With this method of heat transfer, the intensity of the furnace fuel and the temperature of the flame is limited by the refractoriness of the masonry.

Увеличить количество сжигаемого в печи топлива и повысить температуру факела можно, при условии теплопередачи, главным образом, посредством конвекции, а не излучени . В этом случае при высокой температуре факела, направленного на ванну, кладка печи не будет перегреватьс и огнеупорность материалов кладки не будет ограничивать тепловую мощность печи.It is possible to increase the amount of fuel burned in the furnace and increase the temperature of the torch, subject to heat transfer, mainly through convection, and not radiation. In this case, at a high temperature of the torch directed to the bath, the furnace masonry will not overheat and the refractoriness of the masonry materials will not limit the heating capacity of the furnace.

Дл осуществлени такого способа отоплени предлагаетс пр моточна плавильна печь, обогреваема газокислородными горелками автогенного типа, дающими концентрированный, высокотелтературный факел пламени.To implement such a heating method, a direct-flow melting furnace is offered, heated by autogenous-type oxy-fuel burners, giving a concentrated, high-melt flame.

Горелки инжекционного или безынжекционного типа располагаютс в необходимом количестве по передней и задней сторонам печи с наклоном к поверхности ванны. Крайние горелки передней стенки имеют наклон к поперечной оси печи. Загрузка печи осуществл етс через съемный свод. Продукты горени отвод тс по торцам рабочего пространства печи . Дл подогрева воздуха горени за счет тепла отход щих продуктов горени печь может быть снабжена рекуператорами.Injection-type or non-injection-type burners are located in the required amount along the front and rear sides of the furnace with a slope to the bath surface. Extreme burners of the front wall have a slope to the transverse axis of the furnace. The furnace is loaded through a removable arch. The products of combustion are diverted at the ends of the furnace working space. To preheat the combustion air due to the heat of the combustion products, the furnace can be equipped with recuperators.

Предмет изобретени Subject invention

Claims

1. A method of smelting metals in the working space of fiery furnaces, characterized in that, in order to accelerate the smelting of metals, to increase the productivity and durability of the furnaces, the smelting of metals is carried out with the transfer of heat to the metal by convection.

2. A method for melting metals according to claim 1, characterized in that

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The melting of metals with the transfer of heat to metal by convection is carried out according to the principle of autogenous (gas, oxygen) welding and cutting of metals with supply of gas and oxygen into the working space.

3- A device for carrying out the method according to claims. 1 and 2, characterized in that for melting metals, a continuous-flow furnace is used with burners for supplying gas and oxygen built in the front and rear walls of the furnace.

4. A furnace device according to claim 3, characterized in that both injection and non-injection burners are used to supply gas and oxygen.

5. The furnace according to paragraphs. 3 and 4, characterized in that all the burners in the front and rear walls of the furnace are embedded inclined towards the mirror of the bath.

6. The device according to paragraphs. 3-5, characterized in that the extreme burners in the front wall of the furnace are embedded inclined to the transverse axis

7. The furnace device according to paragraphs. 3-6, characterized in that the removal of combustion products is carried out through openings in the end portions of the furnaces.

8. Vidoizmenena device furnace PP. 3-7, characterized in that the furnace is run with a recuperator to preheat the air.