SU1245590A1 - Blast furnace casting yard - Google Patents

Description

The invention relates to ferrous metallurgy, in particular, to equipment intended for the production of smelting products from a blast furnace.

The purpose of the invention is to increase the efficiency of the extraction of the plasma and the reliability of the device.

FIG. 1 shows a device in vertical section; FIG. 2 - the same plan.

The device comprises a pad 1, a tap 2 for releasing the melt, a chute 3, side pumps 4, a drilling machine 5, an electric gun 6, movable parts of curtains 7 and 8 fixed on the lake machine 5 and on electric gun 6, parts of curtains 9 and 10 hinged on the casing 11 of the hearth of the furnace relative to the axis 12.

The device works in a manner that

In the initial period of the finished smelting, when the tap-hole is opened by the drilling machine 5, the curtain 7 is moved to position 7 (fig 2, dotted line). After

1245540J

open the apertures of the drill. on the max 5 with the curtain 7 returns to its original position.

At the basic time of release, the curtains 7g 10, pad 1, the furnace shell 11 and the suction unit air ducts 4 form a shelter ensuring maximum efficiency in capturing fugitive emissions from the trough. At the final moment of melt product release, when the gun 6 is turned to seal the tap hole, juTopa 8 moves to position 8 (Fig. 2, dashed line).

t5 The rotation of the curtains 9 and 10 relative to the axes 12 allows at any time to carry out work in the area of the notch 2 with a minimal negative impact on the efficiency of the aspiration unit.

The principle of the proposed method lies in the high efficiency of the aspiration system during all periods of melting and operational

25 reliability of technological equipment.

Editor I. Derbak

Compiled by B „Rakovsky

Tehred L.Oleynik Proofreader M..Demchik

Order 3961/17 Circulation 552 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

Claims (1)

A DOMAIN FURNACE FOUNDING YARD, containing onboard suction units located above the tuyere service platform, curtains located on both sides of the gutter. a drilling machine, a gun and a furnace cover, characterized in that, in order to increase the efficiency of dust and gas extraction suction and device reliability, the curtains are made of two parts, one of which is rigidly mounted on the drilling machine and the gun, and the other is pivotally mounted on the furnace case. Q (O Figure 1 SU 1245590 A1