CN204952316U - Novel electric heat concentrator capping - Google Patents

Abstract

The utility model proposes a novel electrothermal concentrator tank cover, which includes a short flange tube for the cover body, a short hand hole tube, a short flange tube for liquid inlet, a short flange tube for temperature measurement, a short flange tube for electrodes, and a short flange tube for exhaust. , upper end cover; the upper end cover is fixed on the opposite end of the flange end of the cover flange short pipe; the exhaust flange short pipe communicates with the concentration tank and is fixed on the side wall of the cover flange short pipe; The hole short pipe, the liquid inlet flange short pipe, the temperature measuring flange short pipe, and the electrode flange short pipe are fixed on the upper end cover, all of which communicate with the concentration tank; the internal walls or surfaces in contact with the acid mist are lined with glass fiber reinforced plastics. Beneficial effects: the corrosion of the volatilized acid mist to the tank cover is effectively slowed down, the service life is greatly prolonged, and the price of this type of tank cover is 1/5 of the original electric heating concentrator tank cover.

Description

A new type of electrothermal concentrator tank cover

technical field

The utility model belongs to non-ferrous metal production equipment and relates to a tank cover of an electrothermal concentrator.

Background technique

The traditional copper electrolytic purification system uses electrothermal concentration-water cooling crystallization to produce crude nickel sulfate. The working principle is to insert three graphite electrodes into the concentration tank containing the solution. The acid mist is pumped out by the environmental protection fan, purified and discharged up to the standard, and the concentrated solution overflows into the water-cooled crystallizer to produce crude nickel sulfate. The process is mature and environmentally friendly, and the removal rate of nickel is high. The electrothermal concentrator is the main equipment. Its working condition is that the acidity of the solution is 900-1100g/L and the temperature is 160-175°C. It is composed of a tank body and a tank cover. The two are connected by flanges. Disc-shaped head is adopted, the upper part of the tank cover is hemispherical, the main material is Q235-A, the inner and outer surfaces are lined with lead, and part of the short flange tube on the tank cover and the outer surface of the head are lined with lead. During the production process, the tank cover of this type of electrothermal concentrator is easily corroded, causing the surface of the tank cover and the flange short pipe to collapse and open holes, the service life is short, maintenance and replacement are difficult, and the cost of spare parts for the tank cover is high. At the same time, under the negative pressure of the environmental protection fan, the lead-lined layer at the flange short pipe is easy to fall off after long-term use, blocking the exhaust pipe and affecting production.

Utility model content

In order to solve the problems of the prior art, the utility model proposes a novel electrothermal concentrator tank cover.

The technical scheme of the utility model is: a new type of electrothermal concentrator tank cover, including cover flange short tube, hand hole short tube, liquid inlet flange short tube, temperature measuring flange short tube, electrode flange short tube, steam exhaust Flange short pipe and upper end cover; the upper end cover is fixed on the opposite end of the flange end of the cover flange short pipe; the exhaust flange short pipe communicates with the concentration tank and is fixed on the side wall of the cover body flange short pipe The short hand hole pipe, the liquid inlet flange short pipe, the temperature measuring flange short pipe, and the electrode flange short pipe are fixed on the upper end cover, and all communicate with the concentration tank; the cover body flange short pipe, hand hole short pipe, inlet The liquid flange short pipe, temperature measuring flange short pipe, electrode short flange pipe, exhaust flange short pipe, and the wall or surface of the upper end cover in contact with the acid mist are lined with glass fiber reinforced plastics.

The upper end cover is a flat plate body.

An outer rib plate is welded between the outer side wall of the flange short pipe of the cover body and the flange. The outer ribs are triangular and distributed at equal intervals on the circumference.

An inner rib plate is welded between the inner surface of the upper end cover and the inner surface of the side wall of the flange short tube of the cover body, and the surface of the inner rib plate is lined with glass fiber reinforced plastics. The inner ribs are rectangular and distributed at equal intervals on the circumference.

Beneficial effects: the device has a simple structure and is easy to use. After being applied to the production of copper electrolytic crude nickel sulfate, the practical effect is obvious. Because its main material is made of stainless steel lined with glass fiber reinforced plastics, it can effectively slow down the corrosion of the volatilized acid mist on the tank cover. The service life of the tank is greatly extended, and the price of this type of tank cover is 1/5 of the original electric heating concentrator tank cover, which effectively reduces the cost of tank cover spare parts. In addition, the top of the tank cover adopts a flat structure. When replacing electrodes and other operations, the operator can safely step on the tank cover to operate, which improves the safety level of the operation process.

Description of drawings

Fig. 1 is a top view schematic diagram of the utility model;

Fig. 2 is a sectional view taken along line A-A of Fig. 1 .

detailed description

Referring to the accompanying drawings, the utility model consists of a cover flange short tube 1, a hand hole short tube 2, a liquid inlet flange short tube 3, a temperature measuring flange short tube 4, an electrode flange short tube 5, and an exhaust flange short tube 6 , Upper end cover 7, inner rib plate 8, outer rib plate 9 are formed. The upper end cover 7 is fixed on the opposite end of the flange end of the short flange pipe 1 of the cover body; the short exhaust flange pipe 6 communicates with the concentration tank and is fixed on the side wall of the short flange pipe 1 of the cover body; the short hand hole pipe 2, inlet The liquid flange short pipe 3, the temperature measuring flange short pipe 4, and the electrode flange short pipe 5 are fixed on the upper end cover 7, and all communicate with the concentration tank. The material of each component is stainless steel, which is welded to form the main body of the tank cover. The tank cover is lined with glass fiber reinforced plastic for anti-corrosion. The short flange pipe 1 of the cover body is connected with the flange of the tank body of the electric heating concentrator through bolts, and the solution enters through the short pipe 3 of the liquid inlet flange. In the tank body of the electrothermal concentrator, the graphite electrode is inserted into the electrode flange short pipe 5 and then heated by electricity. The volatilized acid mist is drawn out by the environmental protection fan through the exhaust flange short pipe 6 and then discharged to meet the standard. The concentrated solution overflows into the water-cooled crystallization machine to produce crude nickel sulfate. Hand hole short tube 2 is used to observe the solution condition in the electric heating concentrator. The temperature measuring flange short pipe 4 is used to fix the thermocouple for measuring the solution temperature in the electrothermal concentrator. Electrode flange short tube 5 is used for fixing graphite electrode and insulating porcelain bottle. The inner rib plate 8 and the outer rib plate 9 play the role of increasing strength.

Claims (6)

1. new electrically heating concentrates a tank lid, it is characterized in that: comprise lid flange short tube (1), hand hole short tube (2), feed liquor flange short tube (3), thermometric flange short tube (4), electrode flange short tube (5), steam discharge flange short tube (6), upper end cover (7); Described upper end cover (7) is fixed on the opposite end of lid flange short tube (1) flange end; Described steam discharge flange short tube (6) communicates with thickener, is fixed on lid flange short tube (1) pipe sidewall; Described hand hole short tube (2), feed liquor flange short tube (3), thermometric flange short tube (4), electrode flange short tube (5) are fixed on upper end cover (7), all communicate with thickener; The wall that lid flange short tube (1), hand hole short tube (2), feed liquor flange short tube (3), thermometric flange short tube (4), electrode flange short tube (5), steam discharge flange short tube (6), upper end cover (7) contact with acid mist or face are lined with fiberglass.

2. new electrically heating according to claim 1 concentrates tank lid, it is characterized in that: described upper end cover (7) is plane plate.

3. new electrically heating according to claim 1 concentrates tank lid, it is characterized in that: described lid flange short tube (1) is welded with outer gusset (9) between lateral wall and flange.

4. new electrically heating according to claim 3 concentrates tank lid, it is characterized in that: described outer gusset (9) is triangle, circumferentially equally spaced distribution.

5. new electrically heating according to claim 1 concentrates tank lid, it is characterized in that: be welded with inner reinforced plate (8) between described upper end cover (7) inner face and lid flange short tube (1) side wall inner surface, inner reinforced plate (8) surface lining fiberglass.

6. new electrically heating according to claim 5 concentrates tank lid, it is characterized in that: described inner reinforced plate (8) is rectangle, circumferentially equally spaced distribution.