CN203719399U - Submerged arc furnace with triangular hearth structure - Google Patents

Abstract

The utility model provides a submerged arc furnace with a triangular hearth structure. The submerged arc furnace comprises a furnace body and an electrode. The section of the furnace body is an equilateral triangle, and the vertex angle of the triangle is in arc transition. The submerged arc furnace is characterized in that the edges of the triangle are also arcs. According to the submerged arc furnace, the area of the hearth is reduced, the furnace handling radius is shortened, blind areas and blind spots do not occur easily, and breakage and damage of the furnace body cannot occur easily.

Description

The mineral hot furnace of triangular hearth structure

Technical field

The utility model belongs to mineral hot furnace technical field, is specifically related to a kind of mineral hot furnace of triangular hearth structure.

Background technology

Existing mineral hot furnace adopts spherical hearth mostly.Along with the development of the ferroalloy industry entry criteria and productivity and the continuous progress of metallurgical technology, high grade ore is fewer and feweri, in silicon smelting process, make carbonaceous reducing agent and the raw-material charcoal of ventilating agent, all by coal, tar and cavings replace, impel the large capacity of equipment choosing of existing burner hearth, large electrode, cause large spherical hearth to use furnace charge to increase, area increases, smashing stove radius lengthens, smashing furnace apparatus and charging (feeding) equipment increases, reinforced not meticulous not in place, smash stove not thorough, blind area and blind spot are there is, crucible district is dwindled, production cost increases, furnace charge reduction is not thorough, electrode can not go deep in stove, bottom temperature reduces, in stove, three-phase is not smooth, in stove, metal flows out difficulty, working of a furnace operation worsens.

Prior art for example discloses a kind of triangular hearth structure of mineral hot furnace in CN201488572U, and as shown in Figure 1, this chamber structure adopts triangle can make burner hearth area reducing, smash stove radius shortens and be not prone to blind area and blind spot.But this leg-of-mutton limit for the problem that straight line brings is: the phenomenon of often expanding with heat and contract with cold during body of heater uses, easily rupturing in straight line body of heater limit in expanding with heat and contract with cold, thereby causes burner hearth damage.

Utility model content

The purpose of this utility model is to propose a kind of mineral hot furnace of triangular hearth structure, and this mineral hot furnace can make burner hearth area reducing, smash stove radius shortens and be not prone to blind area and blind spot, is difficult for again occurring body of heater fracture damage.

The technical solution of the utility model is achieved in that a kind of mineral hot furnace of triangular hearth structure, comprises body of heater and electrode, and the cross section of this body of heater is equilateral triangle, and leg-of-mutton drift angle is arc transition, and described leg-of-mutton limit is also circular arc.

In the time expanding with heat and contract with cold, rectilinear body of heater limit can only be out of shape along rectilinear direction, and the body of heater limit of circular arc is except can be along arc direction distortion, whole camber line can also be outwards or to internal strain, this just makes circular arc sole have larger deformable amount with respect to linear sole, thereby is difficult for occurring fracture damage.

Brief description of the drawings

Fig. 1 is the structural scheme of mechanism of the triangular hearth structure of mineral hot furnace of the prior art;

Fig. 2 is structural representation of the present utility model;

Fig. 3 is perspective view of the present utility model;

In figure: 1-body of heater, 2-electrode, 3-burner hearth, the leg-of-mutton limit of 4-.

Detailed description of the invention

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.

The mineral hot furnace of triangular hearth structure as shown in Figures 2 and 3, comprises body of heater 1 and electrode 2, and the cross section of the burner hearth 3 of this body of heater 1 is equilateral triangle, and leg-of-mutton drift angle is arc transition, and described leg-of-mutton limit 4 is also circular arc.

Described electrode 2 symmetries are arranged in the burner hearth 3 of body of heater 1, i.e. the summit of an equilateral triangle of three electrode formations.

The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.

Claims (2)

1. a mineral hot furnace for triangular hearth structure, comprises body of heater (1) and electrode (2), and the cross section of the burner hearth (3) of this body of heater (1) is equilateral triangle, and leg-of-mutton drift angle is arc transition, it is characterized in that: described leg-of-mutton limit (4) is also circular arc.

2. mineral hot furnace as claimed in claim 1, is characterized in that: described electrode (2) symmetry is arranged in described burner hearth (3).