CN2421285Y

CN2421285Y - Basalt melting furnace with platinum alloy bushing protector

Info

Publication number: CN2421285Y
Application number: CN 00219786
Authority: CN
Inventors: 王岚; 李振伟; 崔吉钊; 周成建
Original assignee: NANJING GLASS FIBER RES AND DE
Current assignee: Sinoma Science and Technology Co Ltd
Priority date: 2000-03-27
Filing date: 2000-03-27
Publication date: 2001-02-28
Anticipated expiration: 2010-03-27

Abstract

The utility model relates to a basalt melting furnace with platinum, which is a minitype electric melting furnace for melting basalt materials. The utility model comprises a furnace top 1, a feed pipe 2, furnace walls 3, a furnace bottom 4 and a liquid flowing hole 5, wherein the inner sides of a left furnace wall and a right furnace wall are respectively provided with a pair of electrodes 6. A hearth of the utility model forms a cuboid shape, the ratio of the length to the width is 1.5: 1 to 3: 1, and the minimum net length of the hearth is longer than 400 millimeters. The minimum distance between the edge of the liquid flowing hole 5 and the ends of the electrodes 6 is longer than 60 millimeters, and cooling water bags 7 are arranged outside the inner walls of the furnace which is provided with electrodes 6. The utility model can increase the melting efficiency of basalt, effectively reduce metallic iron which is separated from the basalt in a melting course and protect a platinum leakage plate from being poisoned. The utility model is mainly suitable for the production of tiny fibers of the basalt.

Description

Black Warrior lithification material platinum replacing stove

Black Warrior lithification material platinum replacing stove is to be used for a kind of small electrical melting furnaces of fused basalt raw material, is a kind of improvement to fusing simple glass platinum replacing stove.

With basalt is the basalt primitive fiber (Fibre diameter is less than 3 microns) that raw material makes, and is a kind of senior heat preserving and insulating material.Its fire performance is good, and acid resistance is strong, and water-absorbent is low, the Young's modulus height.Often be used to numerous areas such as space flight, aviation, metallurgy, shipbuilding.It also can be made into filtering material, is used for industries such as medicine, food.At present, the manufacture method of basalt primitive fiber is with natural basalt raw material, after high-temperature fusion, is drawn into robust fibre by the platinum bushing, is blow molded into primitive fiber again.Basalt itself is a kind of volcano extrusive rock.Has easily crystallization (crystallization ceiling temperature 〉=1270 ℃) of temperature of fusion height (＞1350 ℃), iron-holder height (FeO+Fe ₂O ₃Content is up to 10-14%) etc. characteristics, belong to a kind of infusibility material.External normal flame method, the full platinum crucible material of adopting.Because the basalt material after the fusing, color depth, diathermanous poor performance (be simple glass 1/5), cause its melting efficiency very low.

" electric smelting method " can overcome the defective that the basalt diathermancy is poor, melting rate is low, because " electric smelting method " is that electrode is placed the inner heating of raw material, can reduce the levels temperature difference, improves the homogeneity of melt in the kiln.But can not melt infusible basalt with the platinum replacing stove of founding the simple glass material at present.Because found the platinum replacing stove of simple glass material, its burner hearth is generally square.During with its fusing infusible basalt material, with the melt temperature difference about controlling in the stove, easily cause melt crystallization in the stove with regard to difficult.It is very high to add in the basalt raw material iron-holder, and it very easily generates metallic iron with the molybdenum electrode reaction.It very easily flow on the platinum bushing from dog-hole, causes the poisoning of bushing.

The purpose of this utility model is the problem at above-mentioned existence, proposes a kind of Black Warrior lithification material platinum replacing stove.It can improve basaltic melting efficiency, can solve the poisoning problem of platinum bushing again effectively.

Technical solution of the present utility model is as follows: it comprises furnace roof, filling tube, furnace wall, furnace bottom, dog-hole, in furnace wall inboard, the left and right sides pair of electrodes 6 is housed, it is characterized in that: its burner hearth be shaped as rectangular parallelepiped, long-width ratio is 1.5: 1～3: 1, the minimum free length of burner hearth is greater than 400 millimeters, the dog-hole edge leaves the minor increment of electrode tip greater than 60 millimeters, is provided with the water coolant bag outside the kiln interior wall of electrode is housed.For strengthening cooling performance, its area should be greater than the area of electrode in the stove.

The chamber design of rectangular parallelepiped is convenient to adopt shallow-layer electric smelting method.It can reduce the upper and lower temperature difference of melt in the stove, helps improving the homogeneity of molten mass.The dog-hole edge leaves electrode tip certain distance, and outside the kiln interior wall of electrode is housed, post the water coolant bag of area greater than molybdenum electrode area in the stove, it can reduce the electrode flowability of melt on every side, prevent that the iron ion reaction in electrode and the melt from generating metallic iron, and from dog-hole, flow out, thereby avoid the platinum bushing to poison with melt.

Adopt the Black Warrior lithification material platinum replacing stove of the utility model conceptual design, improved basaltic melting efficiency.The design of dog-hole, water coolant bag has reduced separating out of metallic iron in the basalt stone effectively, and protection platinum bushing is not poisoned.The needs that the basalt primitive fiber is produced have been satisfied.

Fig. 1 is the utility model furnace construction synoptic diagram.

Below in conjunction with drawings and Examples the utility model is described in further detail.

With the design melting capacity is that 100 kilograms/day Black Warrior lithification material platinum replacing stove is an example, and long 600 millimeters of its burner hearth is wide 300 millimeters, high 250 millimeters.Two molybdenum electrodes are of a size of 250 millimeters * 50 millimeters * 5 millimeters, and the dog-hole edge is 200 millimeters apart from the distance of molybdenum electrode end.Be equipped with molybdenum electrode both walls outside two water coolant bags are housed, be of a size of 300 millimeters * 100 millimeters * 30 millimeters.

Through the use of two weeks, the kiln working condition is normal.Can melt the basalt melon seeds sheet raw material (5-8 millimeter) more than 100 kilograms every day, the basalt material of founding out is functional, founds glass after the moulding and does not have fe and exist, and analyzes through the Mo Sibaoer spectrometer, and iron ion all enters lattice.Reach design requirements.Can satisfy the needs of producing the basalt primitive fiber.

Claims

1, Black Warrior lithification material platinum replacing stove, comprise furnace roof (1), filling tube (2), furnace wall (3), furnace bottom (4), dog-hole (5), in furnace wall inboard, the left and right sides pair of electrodes (6) is housed, it is characterized in that: its burner hearth be shaped as rectangular parallelepiped, long-width ratio is 1.5: 1～3: 1, the minimum free length of burner hearth is greater than 400 millimeters, and dog-hole (5) edge leaves electrode (6) end minor increment greater than 60 millimeters, is provided with water coolant bag (7) in the kiln interior wall outside that electrode (6) is housed.

2, Black Warrior lithification material platinum replacing stove according to claim 1, it is characterized in that: water coolant bag (7) area is greater than the area of electrode in the stove (6).