CN103992664A

CN103992664A - Anode steel stud coating

Info

Publication number: CN103992664A
Application number: CN201410165566.XA
Authority: CN
Inventors: 王会智; 杨国伟
Original assignee: 王会智
Current assignee: Institute of scientific and technical information, Youjiang District, Baise
Priority date: 2014-04-24
Filing date: 2014-04-24
Publication date: 2014-08-20
Anticipated expiration: 2034-04-24
Also published as: CN103992664B

Abstract

An anode steel stud coating is formed by mixing main materials with auxiliary materials, wherein the main materials comprise 40-70wt% of bauxite, and quartz sand; and the auxiliary materials comprise a high temperature bonding agent having a weight accounting for 1-20% of the weight of the main materials, cellulose having a weight accounting for 2-10% of the weight of the main materials, and bone meal having a weight accounting for 0.1-5% of the weight of the main materials. The main materials comprising bauxite and quartz sand are hardened in high temperature environment with the aid of the high temperature bonding agent and cellulose in order to form a protection layer separating an anode steel stud from an electrolyte, alumina and other gaseous substances, so the electrochemical corrosion is effectively delayed, thereby the service life of the anode steel stud is prolonged.

Description

A kind of anode steel jaw is coated with brush material

Technical field

The present invention relates to the anode steel jaw that use in Aluminum Electrolysis Production field, a kind of anode steel jaw is coated with brush material specifically.

Background technology

When electrolytic aluminum, carbon anode used need to be used anode steel jaw that anode block is put in electrolyzer aluminum oxide is carried out to electrolysis.Because anode steel jaw is all generally to adopt cast iron casting to form, in the high temperature particular surroundings of electrolyzer, can be corroded gradually, cause its conductivity and intensity all can reduce, so not only reduced the work-ing life of anode steel jaw, and additionally increased the casting expense of anode steel jaw, caused the rising of production cost.

Summary of the invention

Thereby for being corroded in electrolyzer, solution prior art Anodic steel pawl cause its electroconductibility variation, strength decreased to affect the problem in work-ing life; the invention provides a kind of anode steel jaw and be coated with brush material; by at this protective cover of anode steel jaw external coating; thereby the particular surroundings in anode steel jaw and electrolyzer is carried out to isolation to a certain degree; the erosion process that has greatly delayed anode steel jaw, has extended work-ing life.The present invention solves the problems of the technologies described above the technical scheme of employing to be: a kind of anode steel jaw is coated with brush material, by major ingredient and auxiliary material, is mixed, and wherein, major ingredient consists of bauxitic clay and quartz sand, and the weight of bauxitic clay accounts for the 40-70% of major ingredient gross weight; Described auxiliary material comprises the bone meal of the high temperature adhesive of major ingredient weight 1-20%, the Mierocrystalline cellulose of major ingredient weight 2-10% and major ingredient weight 0.1-5%.

The defoamer that also contains the flower bulb alkali of major ingredient weight 1-20%, the sanitas of major ingredient weight 0.1-5% and major ingredient weight 0.1-3% in described auxiliary material.

In described major ingredient, also contain the red mud of 5-10% and the aquamaine stone flour of 3-5%.

In described auxiliary material, also contain the Graphite Powder 99 of major ingredient weight 0.5-1%.

The preparation method of above-mentioned protective cover is: first weigh as requested each composition in each composition and auxiliary material in major ingredient and then mix; be ground to again fineness and be no more than 100 orders; in use; add wherein a certain amount of water and stir after be painted on anode steel jaw; after brushing 2-3 time, dry in the cool, and then repeat above-mentioned brushing, dry operation and can complete the brushing of antianode steel pawl for one to twice.

The bone meal using in the present invention is pulverized and is formed for animal skeleton; it at high temperature plays auxiliary material and the better effect of merging of major ingredient of making; make in structure that materials such as Mierocrystalline cellulose in auxiliary material can uniformly penetrating at high temperature form in major ingredient; simultaneously; give protective layer certain high-temperature shrinkage ability, prevent that it is dry and cracked.

In the present invention; aluminum oxide in bauxitic clay and the silicon oxide in quartz sand form the structure of similar sial spinel under hot conditions; and auxiliary material is its bonding rear formation protective layer, Mierocrystalline cellulose at high temperature dewaters after coking and is filled in wherein to prevent that corrosive gas and anode steel jaw Surface Contact from causing the effects such as galvanic corrosion or erosion.

In the present invention, by adding red mud and aquamaine stone flour, under the micro-ferric oxide containing in red mud and the aluminum oxide in bauxitic clay, the silicon oxide high temperature in quartz sand, form more stable and fine and close pin, the mullite crystal of column and the vitreous state that is similar to spinel structure, and aquamaine stone flour is for filling space and compensating the volume disappearance of auxiliary material, and forms packing layer and further play isolation action.

Beneficial effect: in the present invention; the major ingredient such as bauxitic clay, quartz sand is under the auxiliary materials such as high temperature adhesive and Mierocrystalline cellulose auxiliary; can in hot environment, harden; thereby forming protective layer keeps apart anode steel jaw and ionogen, aluminum oxide and other gaseous substance; effectively delay the generation of galvanic corrosion, thereby extended the work-ing life of anode steel jaw.

Embodiment

Below in conjunction with specific embodiment, the present invention is further elaborated.High temperature adhesive, Mierocrystalline cellulose, flower bulb alkali, sanitas and defoamer used in various embodiments of the present invention are commercially available prod.

Embodiment 1

Anode steel jaw is coated with a brush material, by major ingredient and auxiliary material, is mixed, and wherein, major ingredient consists of bauxitic clay and quartz sand, and the weight of bauxitic clay accounts for 40% of major ingredient gross weight; Described auxiliary material comprises the bone meal of the high temperature adhesive of major ingredient weight 20%, the Mierocrystalline cellulose of major ingredient weight 10% and major ingredient weight 5%.

Be more than the basic embodiment of the present embodiment, can on above basis, further improve and optimize:

As, in described auxiliary material, add the defoamer of the flower bulb alkali of major ingredient weight 1%, the sanitas of major ingredient weight 5% and major ingredient weight 0.1%;

As, in described major ingredient, also contain 10% red mud and 5% aquamaine stone flour, now the content of quartz sand is 45%;

As, in described auxiliary material, also contain the Graphite Powder 99 of major ingredient weight 0.5%.

Embodiment 2

Anode steel jaw is coated with a brush material, by major ingredient and auxiliary material, is mixed, and wherein, major ingredient consists of bauxitic clay and quartz sand, and the weight of bauxitic clay accounts for 70% of major ingredient gross weight; Described auxiliary material comprises the bone meal of the high temperature adhesive of major ingredient weight 1%, the Mierocrystalline cellulose of major ingredient weight 2% and major ingredient weight 0.1%.

As, in described auxiliary material, add the defoamer of the flower bulb alkali of major ingredient weight 20%, the sanitas of major ingredient weight 0.1% and major ingredient weight 3%;

As, in described major ingredient, also contain 5% red mud and 3% aquamaine stone flour, now the content of quartz sand is 22%;

As, in described auxiliary material, also contain the Graphite Powder 99 of major ingredient weight 1%.

Embodiment 3

Anode steel jaw is coated with a brush material, by major ingredient and auxiliary material, is mixed, and wherein, major ingredient consists of bauxitic clay and quartz sand, and the weight of bauxitic clay accounts for 55% of major ingredient gross weight; Described auxiliary material comprises the bone meal of the high temperature adhesive of major ingredient weight 11%, the Mierocrystalline cellulose of major ingredient weight 6% and major ingredient weight 2.5%.

As, in described auxiliary material, add the defoamer of the flower bulb alkali of major ingredient weight 10%, the sanitas of major ingredient weight 2.6% and major ingredient weight 1.6%;

As, in described major ingredient, also contain 7.5% red mud and 4% aquamaine stone flour, now the content of quartz sand is 33.5%;

As, in described auxiliary material, also contain the Graphite Powder 99 of major ingredient weight 0.75%.

Claims

1. anode steel jaw is coated with a brush material, it is characterized in that: by major ingredient and auxiliary material, mixed, wherein, major ingredient consists of bauxitic clay and quartz sand, and the weight of bauxitic clay accounts for the 40-70% of major ingredient gross weight; Described auxiliary material comprises the bone meal of the high temperature adhesive of major ingredient weight 1-20%, the Mierocrystalline cellulose of major ingredient weight 2-10% and major ingredient weight 0.1-5%.

2. a kind of anode steel jaw according to claim 1 is coated with brush material, it is characterized in that: the defoamer that also contains the flower bulb alkali of major ingredient weight 1-20%, the sanitas of major ingredient weight 0.1-5% and major ingredient weight 0.1-3% in described auxiliary material.

3. a kind of anode steel jaw according to claim 1 is coated with brush material, it is characterized in that: in described major ingredient, also contain the red mud of 5-10% and the aquamaine stone flour of 3-5%.

4. a kind of anode steel jaw according to claim 1 and 2 is coated with brush material, it is characterized in that: the Graphite Powder 99 that also contains major ingredient weight 0.5-1% in described auxiliary material.