CN103224397B

CN103224397B - Method for producing high-density prebaked anode by adopting carbon intermediate

Info

Publication number: CN103224397B
Application number: CN201310180501.8A
Authority: CN
Inventors: 任利华; 王橙橙
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-05-16
Filing date: 2013-05-16
Publication date: 2014-06-18
Anticipated expiration: 2033-05-16
Also published as: CN103224397A

Abstract

The invention relates to a method for producing a high-density prebaked anode by adopting a carbon intermediate. The method is characterized in that the prebaked intermediate with the average volume density of 1.62-1.75g/cm<3> is produced through molding and baking by adopting the carbon intermediate produced from petroleum coke and the existing prebaked anode production equipment. The prebaked anode produced by using the method has biggest petroleum coke particle diameter, most large-particle petroleum coke and least addition amount of coal tar pitch as a binding agent; the effect and influence of the intermediate on a prebaked anode carbon structure are highlighted; the specific surface area of molded materials is reduced; and the pollution of dust and pitch smoke on the environment is reduced, so that the permeation porosity of the prebaked anode is reduced by more than 50 percent; the antioxidation, anti-erosion and anti-slag capabilities are improved; and the purposes of saving energy, reducing emission and carbon and improving efficiency by more than 20 percent are achieved.

Description

Adopt the method for charcoal element intermediate production high-density prebaked anode

Technical field

The invention belongs to chemical technology field, adopt the method for charcoal element intermediate production high-density prebaked anode, particularly adopt volume density to be greater than 1.65g/cm ³, anisotropisation charcoal element intermediate, the method for production high-density prebaked anode.

Background technology

Refinery coke is spongy, cellular burnt body structure, void content 35～60%, and wherein diameter of phi 0.5～3mm pore accounts for whole pores more than 80%.Adopting refinery coke is raw material production prebaked anode, the fragmentation of refinery coke sealed porosity need to be become to apparent pore, when kneading, molding blank, fine particle, powder and bonding agent are filled in apparent pore, reach that to improve volume density, compressive strength, electroconductibility, oxidation-resistance, resistance to fouling be object.Along with the raising of the development of petroleum refining industry and distillation, purification, fine chemical technology level, in oil per ton, can extract more chemical products with high added-value, cause useful component in oil residuum refinery coke to reduce in a large number, its result: refinery coke pore increases, pore quantity increases; Refinery coke loosen deliquescing, strength decreased; Refinery coke macrobead diminishes, and fine-grained powder amount increases.For these problems, scientific research personnel is also being macrobead formula; Small-particle formula; Coal-tar pitch add-on; Add or improve various trace ingredientss etc. and debate endlessly, the prebaked anode average-volume density≤1.6g/cm after roasting ³, national standard volume density>=1.5g/cm ³hover and stagnated for 50 years, before 50 years, produced and can reach by refinery coke raw material nature, need to lean on now raw material high-temperature calcination, multiple stage material compounding, add the means such as a large amount of powders and coal-tar pitch to realize, also to take the measures such as vacuum kneading, high-pressure molding, anaerobic roasting simultaneously, pay high strength, high energy consumption, high pollution, expensive cost, walked a road for development of curing the symptoms, not the disease.The volume density 1.62g/cm of international most advanced level ³prebaked anode, more domestic volume density 1.60g/cm ³prebaked anode, under identical particle composition, bonding agent add-on condition, from producing to use, can be energy-conservation, reduction of discharging, lower carbon, synergy 10%.Current, can meet macrobead batching requires the refinery coke of production prebaked anode fewer and feweri, small-particle proportioning process has been kept out the speed that incessantly Petroleum Coke keeps falling, the research that scientific research personnel improves quality of prebaked anode is also continuing, the prebaked anode of China is also hovered in low price for a long time in world market, and the development of Chinese carbon industry shoulders heavy responsibilities.

Summary of the invention

The present invention has overcome the defect of above-mentioned existence, and object is the charcoal element intermediate that adopts refinery coke to produce for solving, and utilizes existing prebake anode production equipment, by moulding, roasting, produces average-volume density 1.62～1.75g/cm ³prebaked anode, provides a kind of method that adopts charcoal element intermediate production high-density prebaked anode.

The present invention adopts the method content Description of charcoal element intermediate production high-density prebaked anode:

The present invention adopts the method for charcoal element intermediate production high-density prebaked anode, it is characterized in that:

(1), prebaked anode and charcoal element intermediate is the reclaimed materials after the carbon product that adopts carbon product returns that returns in after-smithing petroleum coke or pitch coke or natural graphite or synthetic graphite or above-mentioned raw materials production process or above-mentioned raw materials produce or above-mentioned raw materials to produce uses, wherein more than one materials are raw material;

(2), utilize Tan Su enterprise existing prebake anode production line equipment;

(3), charcoal element intermediate is spherical or the unequal oval-shaped ball of three-dimensional dimension and two above disjunctor balls that link together by edge of balls or the corner angle square that is circular arc or the corner angle rectangular parallelepiped that is circular arc and two above disjunctor side's bodies that link together by edge of square bodies or corner angle are the octahedra of circular arc symmetry and two above disjunctor octahedrons that link together by edge of octahedrons, spheroid or square body or octahedron, length direction feature dimension is less than 80mm; Bonding agent coal-tar pitch content 7～16%; Average-volume density 1.65～1.80g/cm ³; Load face void content is less than pressurized vertical surface void content; Apparent porosity is less than 10%, and internal porosity rate is less than 20%; There is anisotropisation carbonaceous structure;

(4), charcoal element intermediate volume density is greater than prebaked anode molding blank volume density;

(5), produce pre-baked anode carbon element intermediate add-on, feed way, reinforced place: press mass fraction percentage calculation, add-on 5～100%; Charcoal element intermediate adopts dosing mode to add; Reinforced place: in the time of charcoal element intermediate temperature >=molding materials or thickener temperature, be fed to mix or kneading equipment to respectively can discharging point between forming machine; In the time that charcoal element intermediate temperature is less than molding materials or thickener temperature, be directly fed in mixing or kneading equipment; When adopting continuous mixer explained hereafter prebaked anode, when charcoal element intermediate temperature is less than the bonding agent coal tar pitch soften point temperature self containing, be fed in preliminary heating device;

(6), loss on ignition 2.0～4.9% after the roasting of prebaked anode base substrate;

(7) prebaked anode, after roasting has anisotropisation carbonaceous structure, in the time that charcoal element intermediate add-on is greater than 60%, connects the more common prebaked anode of void content and reduces more than 50%;

(8), prebaked anode is at true density>=2.03g/cm ³under condition, molding blank average-volume density 1.65～1.80g/cm ³; Prebaked anode average-volume density 1.62～1.75g/cm after roasting ³; Inside center position average-volume density 1.60～1.74 g/cm ³;

(9), be suitable for and produce graphite product, carbon product, charcoal paste Carbon Materials and goods thereof.

Its production craft step: material choice → batching → mixing or kneading → moulding, roasting → prebaked anode feature;

(1), material choice

Prebaked anode and charcoal element intermediate is the reclaimed materials after the carbon product that adopts carbon product returns that returns in after-smithing petroleum coke or pitch coke or natural graphite or synthetic graphite or above-mentioned raw materials production process or above-mentioned raw materials produce or above-mentioned raw materials to produce uses, and wherein more than one materials are raw material;

(2), batching

Press mass fraction per-cent batching: grain composition raw material+charcoal element intermediate+bonding agent coal-tar pitch=100%;

Charcoal element intermediate add-on: 5～100%;

Bonding agent is selected: derived product after selection coal-tar pitch and modification thereof, requires the coking value of bonding agent coal-tar pitch to be greater than 40%;

Bonding agent coal-tar pitch add-on: comprise that containing coal-tar pitch amount in charcoal element intermediate, the useless base of moulding, the useless thickener of kneading counts, the bonding agent coal-tar pitch amount adding in molding materials or thickener is 12～18%; In the time of charcoal element intermediate add-on 100%, coal-tar pitch add-on is taken off limit value; In the time of charcoal element intermediate add-on 5%, coal-tar pitch add-on capping value;

Grain composition raw material add-on: grain composition raw material add-on=molding materials total amount 100%-charcoal element intermediate add-on-bonding agent coal-tar pitch add-on;

1. when charcoal element intermediate add-on 90～100%

Coal-tar pitch add-on: comprise that containing in charcoal element intermediate, the useless base of moulding, the useless thickener of kneading that coal-tar pitch amount counts is 12～15%;

Wherein raw material granularity 3～0.1mm accounts for grain composition raw material add-on 50 ± 20%; Residue is≤0.1mm raw material powder;

2. when charcoal element intermediate add-on is less than 90%, is greater than 65%

Coal-tar pitch add-on: comprise that containing in charcoal element intermediate, the useless base of moulding, the useless thickener of kneading that coal-tar pitch amount counts is 13～17%;

Wherein raw material granularity 5～0.1mm accounts for grain composition raw material add-on 50 ± 20%; Residue is≤0.1mm raw material powder;

3. when charcoal element intermediate add-on 5～65%

Utilize original prebaked anode production-line technique formula and grain composition:

Grain composition raw material and bonding agent coal-tar pitch add-on adopt mass fraction per-cent dosage to calculate: grain composition raw material add-on+bonding agent coal-tar pitch add-on=A=molding materials total amount 100%-charcoal element intermediate add-on;

Add after charcoal element intermediate, calculate each granularity raw material or bonding agent add-on: each granularity raw material or bonding agent coal-tar pitch add-on=original prebaked anode production line grain composition each granularity raw material add-on or bonding agent coal-tar pitch add-on × A in original prebaked anode production-line technique formula;

Prebaked anode production technique formula: on calculated value basis, revise, control maximum particle size raw material and bonding agent coal-tar pitch add-on, all the other each granularity raw material add-ons, round numbers after rounding up by add-on calculated value; Coal-tar pitch add-on: coal-tar pitch add-on, on add-on calculated value basis, comprises that containing coal-tar pitch amount in charcoal element intermediate, the useless base of moulding, the useless thickener of kneading counts and be controlled at 14～18%, is maximum particle size raw material add-on by 100% calculating residual content;

(3), mixing or kneading

The mixing of prebaked anode production line or kneading technique have two kinds of methods:

1. mix, continuously or kneading method, utilize the continuous dosing of very equipment of existing prebake anode production line; Preliminary heating device; Mix continuously or kneading equipment; Cool material handling equipment production technique;

2., be interrupted and mix or kneading method, utilize the burden balance of existing prebake anode production line; Be interrupted and mix or kneading equipment; Batch can or cool material handling equipment technique;

Produce routinely prebaked anode schedule of operation and add the various granularity raw materials after grain composition; Control temperature, time, speed; Add thermal material; Add bonding agent coal-tar pitch; Mix or kneading production molding materials or thickener, produce routinely the discharging of prebaked anode schedule of operation, cool material, molding materials or thickener are transported in molding device charging tank;

Charcoal element intermediate with normal mix or kneading material, thickener together with mix or kneading requirement:

1., charcoal element intermediate adds fashionable state of temperature selecting sequence: 1, the hot charcoal element intermediate after just moulding; 2, normal temperature state is heated to the hot charcoal element intermediate of molding materials temperature; 3, normal temperature state charcoal element intermediate;

2., bonding agent coal tar pitch soften point temperature in bonding agent coal tar pitch soften point temperature in charcoal element intermediate >=normal mixing or kneading material, thickener;

3., charcoal element intermediate and normal mix or the temperature of kneading material, thickener is greater than and mixes or kneading close to molding materials or thickener temperature again, the fusing of charcoal element intermediate, peel off minimum;

4., charcoal element intermediate with normal mix or kneading material, thickener together with mixing time shorter, frictional force, the mechanical force of the mix and blend that charcoal element intermediate is subject to are less, the fusing of charcoal element intermediate, peel off less;

5., in charcoal element intermediate, bonding agent coal-tar pitch content is less than bonding agent coal-tar pitch content in common prebaked anode mixing or kneading thickener, two kinds of materials are under higher than bonding agent coal tar pitch soften point temperature condition, when contact friction collision or mixing or kneading, bonding agent coal-tar pitch in thickener can be penetrated in charcoal element intermediate, causes and mixes or kneading aftershaping material or thickener exsiccation; Wettability and plasticity reduce, and along with charcoal element intermediate add-on increases, the bonding agent coal-tar pitch content in molding materials or thickener increases on original formulation basis, adjusts by molding blank state;

6., charcoal element intermediate adds the selecting sequence in place: 1, molding device charging tank; 2, cool material handling equipment; 3, mixing or kneading equipment; 4, preliminary heating device;

Charcoal element intermediate add-on and add place:

1., when in prebaked anode when charcoal element intermediate add-on 100%, directly the charcoal element intermediate that reaches mold temperature is joined in molding device charging tank, produce routinely prebaked anode method molding blank;

2., in the time that in prebaked anode, charcoal element intermediate add-on is less than 100%, according to charcoal element intermediate state of temperature, join the preheating of existing prebake anode production line; Mix or kneading; Cool material is carried; In forming machine charging tank equipment;

Charcoal element intermediate add mode:

1., existing prebake anode production line is to adopt to mix continuously or when kneading method, charcoal element intermediate adopts continuous and quantitative batching feed-type to add;

2., existing prebake anode production line is to adopt to be interrupted to mix or when kneading method, charcoal element intermediate adopts and is interrupted quantitative ingredient feed-type and adds;

In the time that charcoal element intermediate adds the temperature of fashionable temperature >=molding materials or thickener, adopt with the following method and add charcoal element intermediate with place position:

A, newly added equipment: arrive between cool material handling equipment at molding device charging tank, set up the mixing equipment of a band insulation or heating function, the cool material of existing prebake anode production line is carried the molding materials or the thickener that join molding device charging tank, change into and joining in newly-increased mixing equipment, add charcoal element intermediate simultaneously, charcoal element intermediate mixes in newly-increased mixing equipment with molding materials or thickener, meet after molding materials temperature requirement, be transported in molding device charging tank, produce routinely prebaked anode method molding blank;

B, utilize existing prebake anode production line equipment and process: a, when stirrer being installed in molding device charging tank, while clearly knowing molding materials in charging tank or thickener quantity: charcoal element intermediate directly joins in molding device charging tank or directly joins in cool material handling equipment or directly join in the batch can of transportation molding materials or thickener; B, adopt and mix continuously or when kneading technique, add charcoal element intermediate to cool material handling equipment feed points, with from the molding materials or the thickener that mix or kneading equipment discharge port out mixes or kneading is good, in cool material handling equipment blanking process, join again, realize mutually and mixing, cool material handling equipment mixes completing in molding device charging tank discharge process for the second time; C, directly to the interruption that contains the good molding materials of kneading or thickener mix or kneading equipment in add charcoal element intermediate, continue to mix or kneading 10s～100s;

In the time that charcoal element intermediate adds fashionable temperature and is less than the temperature of molding materials or thickener, utilize preliminary heating device, mix or kneading equipment, preheating mix or kneading process in improve charcoal element intermediate temperature, complete and mix or kneading;

A, in the time that charcoal element intermediate temperature is less than in charcoal element intermediate bonding agent coal tar pitch soften point temperature: a, add charcoal element intermediate, preheating and mixing together with grain composition material to the preliminary heating device of continuous mixing or kneading prebaked anode production line; Heat together, add bonding agent coal-tar pitch, carry out kneading; B, to be interrupted mix the interruption of kneading prebaked anode production line is mixed or kneading equipment in add charcoal element intermediate, be interrupted mixing or the kneading equipment residence time in order to shorten charcoal element intermediate, requirement grain composition material mixes with bonding agent coal-tar pitch or kneading finishes, when the thickener temperature >=170 ℃, add again charcoal element intermediate, continue to mix or kneading 1～20min, make grain composition material, bonding agent coal-tar pitch, charcoal element intermediate dispersed, reach molding materials or thickener requirement;

B, when charcoal element intermediate temperature is between between charcoal element intermediate bonding agent coal tar pitch soften point temperature and molding materials or thickener temperature time: a, to continuous mix kneading prebaked anode production line mixes or kneading equipment in add the plain intermediate of charcoal; B, to the interruption of the good thickener of kneading mix or kneading equipment in add charcoal element intermediate, continue to mix or kneading 0.5～5min;

(4) moulding, roasting

Moulding, roasting routinely prebaked anode production method are carried out;

(5) prebaked anode feature

Prebaked anode after roasting, loss on ignition 2.0～4.9%; At true density>=2.03g/cm ³under condition, average-volume density 1.62～1.75g/cm ³; Inside center position average-volume density 1.60～1.74g/cm ³; Average compressive strength 40～70MPa; There is anisotropisation characteristic; Void content 15～21%.

The prebaked anode that the present invention produces, petroleum coke particles particle diameter maximum; Macrobead refinery coke quantity is maximum; Bonding agent coal-tar pitch add-on is minimum, the role and influence of outstanding charcoal element intermediate to prebaked anode carbonaceous structure, adopt charcoal element intermediate volume density to be greater than prebaked anode molding blank volume density and produce prebaked anode method, reduce moulding material specific surface area, reduce dust and the pollution of bitumen flue gas to environment, make prebaked anode connect void content and reduce more than 50%; Anti-oxidant, anti-erosion, anti-slag ability are improved.At prebaked anode true density>=2.03g/cm ³under condition, produce average-volume density 1.62～1.75g/cm ³; The prebaked anode of average compressive strength 40～70MPa, contrast average-volume density 1.60g/cm ³common prebaked anode, can realize energy-conservation, reduction of discharging, lower carbon, synergy more than 20%.

Embodiment

The present invention adopts the method for charcoal element intermediate production high-density prebaked anode to be achieved in that below and illustrates.

(6), produce common prebaked anode, loss on ignition 5～6% after roasting; The present invention produces prebaked anode, loss on ignition 2.0～4.9% after roasting, and the common prebaked anode of comparison production, can reduce the prebaked anode roasting cycle more than 10%; Reduce prebaked anode moulding and roasting scrap rate more than 50%, reduce dust and the above % of bitumen flue gas quantity discharged 40;

(7), the prebaked anode produced of the present invention has anisotropisation carbonaceous structure, in the time that charcoal element intermediate add-on is greater than 60%, connects the more common prebaked anode of void content and reduce more than 50%;

(8) prebaked anode that, the present invention produces is at true density>=2.03g/cm ³under condition, molding blank average-volume density 1.65～1.80g/cm ³; Prebaked anode average-volume density 1.62～1.75g/cm after roasting ³; Inside center position average-volume density 1.60～1.74 g/cm ³; When charcoal element intermediate melts completely, peels off in molding materials or thickener, need to increase bonding agent coal-tar pitch add-on, still can meet above-mentioned volume density index;

(9), production technology method of the present invention is suitable for equally and produces graphite product, carbon product, charcoal paste Carbon Materials and goods thereof.

Production craft step of the present invention: material choice → batching → mixing or kneading → moulding, roasting → prebaked anode feature;

(1), material choice

Charcoal element intermediate feature: charcoal element intermediate is spherical or the unequal oval-shaped ball of three-dimensional dimension and two above disjunctor balls that link together by edge of balls or the corner angle square that is circular arc or the corner angle rectangular parallelepiped that is circular arc and two above disjunctor side's bodies that link together by edge of square bodies or corner angle are the octahedra of circular arc symmetry and two above disjunctor octahedrons that link together by edge of octahedrons, spheroid or square body or octahedron, length direction feature dimension is less than 80mm; Bonding agent coal-tar pitch content 7～16%; Average-volume density 1.65～1.80g/cm ³; Load face void content is less than pressurized vertical surface void content; Apparent porosity is less than 10%, and internal porosity rate is less than 20%; There is anisotropisation carbonaceous structure;

(2), batching

Press mass fraction per-cent batching: grain composition raw material+charcoal element intermediate+bonding agent coal-tar pitch=molding materials total amount 100%;

Charcoal element intermediate add-on: 5～100%;

1. when charcoal element intermediate add-on 90～100%

3. when charcoal element intermediate add-on 5～65%

(3), mixing or kneading

The mixing of the existing prebake anode production line of utilization of the present invention or kneading technique have two kinds of methods: 1. mix continuously or kneading method, utilize the continuous dosing of very equipment of existing prebake anode production line; Preliminary heating device; Mix continuously or kneading equipment; Cool material handling equipment production technique; 2. be interrupted and mix or kneading method, utilize the burden balance of existing prebake anode production line; Be interrupted and mix or kneading equipment; Batch can or cool material handling equipment technique.Produce routinely prebaked anode schedule of operation and add the various granularity raw materials after grain composition; Control temperature, time, speed; Add thermal material; Add bonding agent coal-tar pitch; Mix or kneading production molding materials or thickener, produce routinely the discharging of prebaked anode schedule of operation, cool material, molding materials or thickener are transported in molding device charging tank;

Charcoal element intermediate mixed characteristic: charcoal element intermediate contains 7～16% bonding agent coal-tar pitch, the prebaked anode molding blank that character compares bonding agent coal-tar pitch content 15～20% is identical, itself not needing to mix or kneading, is anisotropy densification degree 1.65～1.80g/cm ³the little base substrate in charcoal element unit, be greater than under softening point temperature condition and there is plasticity-.Charcoal element intermediate mixes or kneading with common thickener, be greater than under coal tar pitch soften point temperature condition, bonding agent coal-tar pitch in charcoal element intermediate will soften, melt, and peeling phenomenon will occur for top layer particle, powder, and this state is along with mixing or kneading temperature rising; Mixing time lengthens; Mixing puts more effort, and melts and peels off speed quickening.Last charcoal element intermediate all with particle, powder, thickener formal distribution mix or kneading aftershaping material or thickener in, cause and mix or kneading aftershaping material or thickener become dry, cause bonding agent coal-tar pitch add-on to increase;

Charcoal element intermediate with normal mix or kneading material, thickener together with mix or kneading requires: 1. charcoal element intermediate adds fashionable state of temperature selecting sequence: 1, the plain intermediate of the hot charcoal after just moulding; 2, normal temperature state is heated to the hot charcoal element intermediate of molding materials temperature; 3, normal temperature state charcoal element intermediate; 2. bonding agent coal tar pitch soften point temperature in bonding agent coal tar pitch soften point temperature in charcoal element intermediate >=normal mixing or kneading material, thickener; 3. charcoal element intermediate and normal mix or the temperature of kneading material, thickener is greater than and mixes or kneading close to molding materials or thickener temperature again, the fusing of charcoal element intermediate, peel off minimum; 4. charcoal element intermediate and normal mix or kneading material, thickener together with mixing time shorter, frictional force, the mechanical force of the mix and blend that charcoal element intermediate is subject to are less, charcoal element intermediate melts, peels off less; 5. in charcoal element intermediate, bonding agent coal-tar pitch content is less than bonding agent coal-tar pitch content in common prebaked anode mixing or kneading thickener, two kinds of materials are under higher than bonding agent coal tar pitch soften point temperature condition, when contact friction collision or mixing or kneading, bonding agent coal-tar pitch in thickener can be penetrated in charcoal element intermediate, causes and mixes or kneading aftershaping material or thickener exsiccation; Wettability and plasticity reduce, and along with charcoal element intermediate add-on increases, the bonding agent coal-tar pitch content in molding materials or thickener increases on original formulation basis, adjusts by molding blank state; 6. charcoal element intermediate adds the selecting sequence in place: 1, molding device charging tank; 2, cool material handling equipment; 3, mixing or kneading equipment; 4, preliminary heating device;

Charcoal element intermediate adds place and mode:

According to the existing apparatus for production line layout of prebaked anode manufacturing enterprise, technical process, factory building steric requirements, be distributed in the degree of uniformity in prebaked anode base substrate in conjunction with charcoal element intermediate, consider:

1. in the time of the plain intermediate add-on 100% of charcoal in prebaked anode, directly the charcoal element intermediate that reaches mold temperature is joined in molding device charging tank, produce routinely prebaked anode method molding blank;

2. in the time that charcoal element intermediate add-on is less than 100% in prebaked anode, according to charcoal element intermediate state of temperature, join the preheating of existing prebake anode production line; Mix or kneading; Cool material is carried; In forming machine charging tank equipment;

Charcoal element intermediate add mode: existing prebake anode production line is to adopt to mix continuously or when kneading method, charcoal element intermediate adopts continuous and quantitative batching feed-type to add; Existing prebake anode production line is to adopt while being interrupted mixing or kneading method, and the employing of charcoal element intermediate is interrupted quantitative ingredient feed-type and adds.

The temperature of charcoal element intermediate self determines to add the place position of charcoal element intermediate:

A, newly added equipment: arrive between cool material handling equipment at molding device charging tank, newly establish the mixing equipment of a band insulation or heating function, the cool material of existing prebake anode production line is carried the molding materials or the thickener that join molding device charging tank, change into and joining in newly-increased mixing equipment, add charcoal element intermediate simultaneously, charcoal element intermediate mixes in newly-increased mixing equipment with molding materials or thickener, meet after molding materials temperature requirement, be transported in molding device charging tank, produce routinely prebaked anode method molding blank;

B, utilize existing prebake anode production line equipment and process: a, when stirrer being installed in molding device charging tank, while clearly knowing molding materials in charging tank or thickener quantity: charcoal element intermediate directly joins in molding device charging tank or directly joins in cool material handling equipment or directly join in the batch can of transportation molding materials or thickener; B, adopt and mix continuously or when kneading technique, add charcoal element intermediate to cool material handling equipment feed points, with from the molding materials or the thickener that mix or kneading equipment discharge port out mixes or kneading is good, joining in cool material handling equipment blanking process, realize mutually and mixing, cool material handling equipment mixes completing in molding device charging tank discharge process for the second time; C, directly to the interruption that contains the good molding materials of kneading or thickener mix or kneading equipment in add charcoal element intermediate, continue to mix or kneading 10s～100s;

In the time that charcoal element intermediate adds fashionable temperature and is less than the temperature of molding materials or thickener, utilize preliminary heating device; Mix or kneading equipment, in preheating or mixing or kneading process, improve charcoal element intermediate temperature, complete and mix or kneading;

(4) moulding, roasting

Moulding, roasting routinely prebaked anode production method are carried out;

(5) prebaked anode feature

Prebaked anode after roasting, loss on ignition 2.0～4.9%; At true density>=2.03g/cm ³under condition, average-volume density 1.62～1.75g/cm ³; Inside center position average-volume density 1.60～1.74g/cm ³; Average compressive strength 40～70MPa; There is anisotropisation characteristic; Void content 15～21%.Compare with common prebaked anode, under the identical condition of prebaked anode molding blank volume density, can improve quality of prebaked anode 0.1～3.7% after roasting.

?[0012]?

Embodiment 1

Anisotropy densification prebaked anode production method

(1) material choice

Adopt the charcoal element intermediate that prebaked anode is raw material production with after-smithing petroleum coke, specification shape: Φ 30 × 24 × 18mm oval-shaped ball; Volume density 1.70g/cm ³, the bonding agent in charcoal element intermediate is 89 ℃ of medium temperature coal pitch of softening point temperature, content 13.8%;

(2) batching

Charcoal element intermediate add-on: 100%;

Bonding agent is selected, add-on control: all utilize 89 ℃ of medium temperature coal pitch of softening point temperature in charcoal element intermediate, content 13.8%;

(3) moulding, roasting

140～160 ℃ of charcoal element intermediates of temperature or firm pressure ball are produced to 140～160 ℃ of charcoals element intermediates of temperature, directly deliver to vibrating forming machine charging tank, prebaked anode production method is carried out moulding, roasting routinely;

(4) prebaked anode feature

Prebaked anode after roasting, true density 2.04g/cm ³; Average loss on ignition≤2.5%; Average-volume density 1.68g/cm ³; Inside center position average-volume density 1.67g/cm ³; Average compressive strength 62MPa; There is anisotropisation characteristic; Average void content≤17.5%.Compare with common prebaked anode, under prebaked anode molding blank volume density the same terms, can improve quality of prebaked anode >=3% after roasting.

Embodiment 2

Utilize existing prebake anode production line continous batching, kneading explained hereafter prebaked anode method ()

(1) material choice

Adopt and produce prebaked anode after-smithing petroleum coke; Prebaked anode anode scrap; The charcoal element intermediate that prebaked anode is produced with after-smithing petroleum coke is raw material;

Charcoal element intermediate specification shape: symmetrical octahedra, two symmetrical rectangular pyramid drift angle spacing 30mm; Rectangular pyramid square bottom side length 40mm; Corner angle circular arc R=4mm; Volume density 1.68g/cm ³, the bonding agent in charcoal element intermediate is 105 ℃ of hard coal-tar pitch of softening point temperature, content 12%;

(2) batching

Adopt one of macrobead formula of the current conventional production and application of prebaked anode production line;

Grain composition:

12～6mm refinery coke 14%;

6～2mm refinery coke 20%;

2～0mm refinery coke 10%;

3～0mm prebaked anode anode scrap 10%;

≤ 0.1mm petroleum coke powder 30%;

Bonding agent is selected, add-on control: select 105 ℃ of hard coal-tar pitch of softening point temperature, add-on 16%;

Add after 50% charcoal element intermediate, calculate prebaked anode production-line technique formula;

Grain composition:

12～6mm refinery coke, 0.5 × 14%=7%;

6～2mm refinery coke, 0.5 × 20%=10%;

2～0mm refinery coke, 0.5 × 10%=5%;

3～0mm prebaked anode anode scrap, 0.5 × 10%=5%;

≤ 0.1mm petroleum coke powder 0.5 × 30%=15%;

Bonding agent is selected, add-on control: select 105 ℃ of hard coal-tar pitch of softening point temperature, add-on 0.5 × 16%=8%;

Charcoal element intermediate add-on: 50%;

Finally adjust the actual formula of prebaked anode production-line technique of confirming;

Grain composition:

12～6mm refinery coke 5%;

6～2mm refinery coke 10%;

2～0mm refinery coke 5%;

3～0mm prebaked anode anode scrap 5%;

≤ 0.1mm petroleum coke powder 15%;

Bonding agent is selected, add-on control: select 105 ℃ of hard coal-tar pitch of softening point temperature, add-on 10%;

Charcoal element intermediate add-on: 50%, the bonding agent coal-tar pitch content 6% that charcoal element intermediate is brought into;

(3) kneading

Utilize preheating spiral machine, continuous mixer, the cool material conveyer technique of existing prebake anode production line, by various granularity refinery cokes, the prebaked anode anode scrap of grain composition, belted electronic balance by separately continuously, quantitative ingredient sends into preheating spiral machine, when preheating material enters continuous mixer, continuous and quantitative adds bonding agent coal-tar pitch, produces routinely prebaked anode operation sequence control temperature, time, speed; Add thermal material; Mix or kneading production molding ladle.From the out good molding ladle of kneading of continuous mixer, by cool material conveyer to the feeding of vibrating forming machine charging tank.Charcoal element intermediate is keeping under 150～180 ℃ of temperature condition, by belted electronic balance continuous and quantitative cool material conveyer opening for feed feed below kneading machine discharge port, with from the kneading machine discharge port molding ladle that out kneading is good, joining in cool material conveyer blanking process, realize mutually and mixing, cool material routinely molding ladle technique carries out, and cool material conveyer mixes completing in vibrating forming machine charging tank discharge process for the second time;

(4) moulding, roasting

Moulding, roasting routinely prebaked anode production method are carried out;

(5) prebaked anode feature

Prebaked anode after roasting, true density 2.03g/cm ³; Average loss on ignition≤3.7%; Average-volume density 1.65g/cm ³; Inside center position average-volume density 1.63g/cm ³; Average compressive strength 45MPa; There is anisotropisation characteristic; Average void content≤19.5%.Compare with common prebaked anode, under the identical condition of prebaked anode molding blank volume density, can improve quality of prebaked anode >=1.8% after roasting.

Embodiment 3

Utilize existing prebake anode production line to be interrupted batching, kneading pot explained hereafter prebaked anode method

(1) material choice

Adopt and produce prebaked anode after-smithing petroleum coke; Prebaked anode anode scrap; The prebaked anode moulding base returns that give up; Graphite Electrodes anode scrap; The charcoal element intermediate that prebaked anode is produced with after-smithing petroleum coke is raw material;

Charcoal element intermediate specification shape: Φ 45 × 30 × 25mm oval-shaped ball; Volume density 1.69g/cm ³, the bonding agent in charcoal element intermediate is 109 ℃ of hard coal-tar pitch of softening point temperature, content 10%;

(2) batching

Adopt one of small-particle formula of the current conventional production and application of prebaked anode production line;

Grain composition:

6～3mm refinery coke 18%;

3～1mm refinery coke 12%;

1～0mm refinery coke 10%;

3～0mm prebaked anode anode scrap 5%;

12～0mm prebaked anode moulding base returns 6% that give up;

≤ 0.1mm petroleum coke powder 32%;

Bonding agent is selected, add-on control: select 107 ℃ of hard coal-tar pitch of softening point temperature, add-on 17%;

Add after 60% charcoal element intermediate, calculate prebaked anode production-line technique formula;

Grain composition:

6～3mm refinery coke, 0.4 × 18%=7.2%;

3～1mm refinery coke, 0.4 × 12%=4.8%;

1～0mm refinery coke, 0.4 × 10%=4%;

3～0mm prebaked anode anode scrap, 0.4 × 5%=2%;

12～0mm prebaked anode moulding base returns 0.4 × 6%=2.4% that gives up;

≤ 0.1mm petroleum coke powder 0.4 × 32%=12.8%;

Bonding agent is selected, add-on control: select 107 ℃ of hard coal-tar pitch of softening point temperature, add-on 0.4 × 17%=6.8%;

Charcoal element intermediate add-on: 60%;

Grain composition:

6～3mm refinery coke 4%;

3～1mm refinery coke 5%;

1～0mm refinery coke 4%;

3～0mm prebaked anode anode scrap 2%;

12～0mm prebaked anode moulding base returns 2% that give up, the bonding agent coal-tar pitch content 0.34% of bringing into;

≤ 0.1mm petroleum coke powder 12%;

≤ 0.1mm graphite anode scrap powder 1%;

Bonding agent is selected, add-on control: select 107 ℃ of hard coal-tar pitch of softening point temperature, add-on 10%;

Charcoal element intermediate add-on: 60%, the bonding agent coal-tar pitch content 6% that charcoal element intermediate is brought into;

(3) kneading

Utilize burden balance, kneading pot, the batch can technique of existing prebake anode production line, produce routinely prebaked anode schedule of operation and in kneading pot, add the various granularity raw materials after grain composition; Control temperature, time; Add thermal material; Add bonding agent coal-tar pitch; Mix or kneading production molding ladle.After molding ladle kneading is good, in kneading pot, quantitatively add 150～180 ℃ of charcoal element intermediates of temperature, continue kneading 10s～60s and finish kneading, blowing is in batch can, produce routinely the cool material of prebaked anode schedule of operation, molding ladle is transported in molding device charging tank;

(4) moulding, roasting

Moulding, roasting routinely prebaked anode production method are carried out;

(5) prebaked anode feature

Prebaked anode after roasting, true density 2.04g/cm ³; Average loss on ignition≤3.5%; Average-volume density 1.66g/cm ³; Inside center position average-volume density 1.64g/cm ³; Average compressive strength 50MPa; There is anisotropisation characteristic; Average void content≤19.0%.Compare with common prebaked anode, under the identical condition of prebaked anode molding blank volume density, can improve quality of prebaked anode >=2% after roasting.

Embodiment 4

Simple proportioning process is produced prebaked anode method

This is that one is energy-conservation, reduction of discharging is object, and the simplest proportioning process is produced the method for prebaked anode, only has two kinds of granularities, but can produce volume density 1.67 g/cm ³, anisotropisation prebaked anode.

(1) material choice

Adopt and produce prebaked anode after-smithing petroleum coke; The charcoal element intermediate that prebaked anode is produced with after-smithing petroleum coke is raw material;

Charcoal element intermediate specification shape: the circular spheroid of Φ 30mm; Volume density 1.69g/cm ³, the bonding agent in charcoal element intermediate is 109 ℃ of hard coal-tar pitch of softening point temperature, content 12%;

(2) batching

Grain composition:

5～0mm natural particle size refinery coke 12%;

≤ 0.1mm petroleum coke powder 10%;

Bonding agent is selected, add-on control: select 91 ℃ of modified coal pitchs of softening point temperature, add-on 8%;

Charcoal element intermediate add-on 70%, the bonding agent coal-tar pitch content 8.4% that charcoal element intermediate is brought into;

(3) kneading

Utilize existing prebake anode production line burden balance, be interrupted kneading pot, cool material conveyer, forming machine charging tank technique with whipping appts, 5～0 natural particle size refinery cokes ,≤0.1mm petroleum coke powder after batching are sent in kneading pot, produced routinely prebaked anode operation sequence control temperature, time; Add thermal material; Add bonding agent coal-tar pitch; Mix or kneading production molding ladle.After molding ladle kneading is good, blowing, to cool material conveyer, is produced routinely the cool material of prebaked anode schedule of operation, is transported in molding device charging tank; Meanwhile, with belted electronic balance, to the charcoal element intermediate quantitatively adding in vibrating forming machine charging tank after 150～160 ℃ of firm pressure balls of temperature, reinforced end, starts forming machine charging tank whipping appts and mixes 0.5～5min;

(4) moulding, roasting

Moulding, roasting routinely prebaked anode production method are carried out;

(5) prebaked anode feature

Prebaked anode after roasting, true density 2.03g/cm ³; Average loss on ignition≤3.2%; Average-volume density 1.67g/cm ³; Inside center position average-volume density 1.66g/cm ³; Average compressive strength 55MPa; There is anisotropisation characteristic; Average void content≤17.5%.Compare with common prebaked anode, under the identical condition of prebaked anode molding blank volume density, can improve quality of prebaked anode >=2.3% after roasting.

Embodiment 5

Utilize existing prebake anode production line continous batching, kneading explained hereafter prebaked anode method (two)

(1) material choice

Charcoal element intermediate specification shape: 38 × 28 × 22mm corner angle circular arc R=8mm rectangular parallelepiped; Volume density 1.69g/cm ³, the bonding agent in charcoal element intermediate is 108 ℃ of hard coal-tar pitch of softening point temperature, content 8.5%;

(2) batching

Adopt one of middle granular recipe of the current conventional production and application of prebaked anode production line;

8～4mm refinery coke 11%;

4～1mm refinery coke 15%;

1～0mm refinery coke 10%;

4～0mm prebaked anode anode scrap 8%;

12～0mm prebaked anode moulding base returns 10% that give up;

≤ 0.1mm petroleum coke powder 30%;

Bonding agent is selected, add-on control: select 101 ℃ of hard coal-tar pitch of softening point temperature, add-on 16%;

Add after 30% charcoal element intermediate, calculate prebaked anode production-line technique formula;

Grain composition:

8～4mm refinery coke, 0.7 × 11%=7.7%;

4～1mm refinery coke, 0.7 × 15%=10.5%;

1～0mm refinery coke, 0.7 × 10%=7%;

4～0mm prebaked anode anode scrap, 0.7 × 8%=5.6%;

12～0mm prebaked anode moulding base returns 0.7 × 10%=7% that gives up;

≤ 0.1mm petroleum coke powder 0.7 × 30%=21%;

Bonding agent is selected, add-on control: select 108 ℃ of hard coal-tar pitch of softening point temperature, add-on 0.7 × 16%=11.2%;

Charcoal element intermediate add-on: 30%;

Grain composition:

8～4mm refinery coke 4%;

4～1mm refinery coke 11%;

1～0mm refinery coke 7%;

4～0mm prebaked anode anode scrap 6%;

12～0mm prebaked anode base substrate returns 7% that give up, the bonding agent coal-tar pitch content 1.05% of bringing into;

≤ 0.1mm petroleum coke powder 20%;

≤ 0.1mm Graphite Electrodes anode scrap powder 1%;

Bonding agent is selected, add-on control: select 108 ℃ of hard coal-tar pitch of softening point temperature, add-on 14%;

Charcoal element intermediate add-on: 30%, the bonding agent coal-tar pitch content 2.55% that charcoal element intermediate is brought into;

(3) kneading

Utilize preheating spiral machine, continuous mixer, the cool material conveyer technique of existing prebake anode production line, by the various granularity raw materials of grain composition, belted electronic balance by separately continuously, quantitative ingredient sends into preheating spiral machine, when after preheating, material enters continuous mixer, continuous and quantitative adds bonding agent coal-tar pitch; Continuous and quantitative adds the charcoal element intermediate of 80～120 ℃ of temperature, produces routinely prebaked anode operation sequence control temperature, time, speed; Add thermal material; Mix or kneading production molding ladle, from the out good material of kneading of continuous mixer, produce routinely the cool material of prebaked anode schedule of operation, molding ladle is transported in molding device charging tank;

(4) moulding, roasting

Moulding, roasting routinely prebaked anode production method are carried out;

(5) prebaked anode feature

Prebaked anode after roasting, true density 2.04g/cm ³; Average loss on ignition≤4.5%; Average-volume density 1.63g/cm ³; Inside center position average-volume density 1.61g/cm ³; Average compressive strength 42MPa; There is anisotropisation characteristic; Average void content≤20%.Compare with common prebaked anode, under the identical condition of prebaked anode molding blank volume density, can improve quality of prebaked anode >=1.2% after roasting.

Claims

1. a method that adopts charcoal element intermediate production high-density prebaked anode, is characterized in that:

2. the method for employing charcoal element intermediate production high-density prebaked anode according to claim 1, is characterized in that: production craft step: material choice → batching → mixing or kneading → moulding, roasting → prebaked anode feature;

(1), material choice

(2), batching

Charcoal element intermediate add-on: 5～100%;

1. when charcoal element intermediate add-on 90～100%

3. when charcoal element intermediate add-on 5～65%

(3), mixing or kneading

Charcoal element intermediate add-on and add place:

Charcoal element intermediate add mode:

(4) moulding, roasting

Moulding, roasting routinely prebaked anode production method are carried out;

(5) prebaked anode feature

3. an anisotropy densification prebaked anode production method, is characterized in that: material choice: adopt the charcoal element intermediate that prebaked anode after-smithing petroleum coke is raw material production, specification shape: Φ 30 × 24 × 18mm oval-shaped ball; Volume density 1.70g/cm ³, the bonding agent in charcoal element intermediate is 89 ℃ of medium temperature coal pitch of softening point temperature, content 13.8%;

Charcoal element intermediate add-on: 100%;

Moulding, roasting: 140～160 ℃ of charcoal element intermediates of temperature or firm pressure ball are produced to 140～160 ℃ of charcoals element intermediates of temperature, directly deliver to vibrating forming machine charging tank, prebaked anode production method is carried out moulding, roasting routinely;

Prebaked anode feature: prebaked anode after roasting, true density 2.04g/cm ³; Average loss on ignition≤2.5%; Average-volume density 1.68g/cm ³; Inside center position average-volume density 1.67g/cm ³; Average compressive strength 62MPa; There is anisotropisation characteristic; Average void content≤17.5%.

4. utilize existing prebake anode production line continous batching, a kneading explained hereafter prebaked anode method, it is characterized in that: material choice: adopt and produce prebaked anode after-smithing petroleum coke; Prebaked anode anode scrap; The charcoal element intermediate that prebaked anode is produced with after-smithing petroleum coke is raw material;

Adopt the grain composition of prebaked anode production line macrobead formula: 12～6mm refinery coke 14%; 6～2mm refinery coke 20%; 2～0mm refinery coke 10%; 3～0mm prebaked anode anode scrap 10%; ≤ 0.1mm petroleum coke powder 30%;

Add after 50% charcoal element intermediate, calculate the grain composition of prebaked anode production-line technique formula: 12～6mm refinery coke, 0.5 × 14%=7%; 6～2mm refinery coke, 0.5 × 20%=10%; 2～0mm refinery coke, 0.5 × 10%=5%; 3～0mm prebaked anode anode scrap, 0.5 × 10%=5%; ≤ 0.1mm petroleum coke powder 0.5 × 30%=15%;

Bonding agent is selected, add-on control: select 105 ℃ of hard coal-tar pitch of softening point temperature, add-on 0.5 × 16%=8%; Charcoal element intermediate add-on: 50%;

Finally adjust the grain composition of confirming the actual formula of prebaked anode production-line technique: 12～6mm refinery coke 5%; 6～2mm refinery coke 10%; 2～0mm refinery coke 5%; 3～0mm prebaked anode anode scrap 5%; ≤ 0.1mm petroleum coke powder 15%;

Kneading: preheating spiral machine, continuous mixer, the cool material conveyer technique of utilizing existing prebake anode production line, by various granularity refinery cokes, the prebaked anode anode scrap of grain composition, belted electronic balance by separately continuously, quantitative ingredient sends into preheating spiral machine, when preheating material enters continuous mixer, continuous and quantitative adds bonding agent coal-tar pitch, produces routinely prebaked anode operation sequence control temperature, time, speed; Add thermal material; Mix or kneading production molding ladle;

From the out good molding ladle of kneading of continuous mixer, by cool material conveyer to the feeding of vibrating forming machine charging tank;

Charcoal element intermediate is keeping under 150～180 ℃ of temperature condition, by belted electronic balance continuous and quantitative cool material conveyer opening for feed feed below kneading machine discharge port, with from the kneading machine discharge port molding ladle that out kneading is good, joining in cool material conveyer blanking process, realize mutually and mixing, cool material routinely molding ladle technique carries out, and cool material conveyer mixes completing in vibrating forming machine charging tank discharge process for the second time, and moulding, roasting routinely prebaked anode production method are carried out;

Prebaked anode feature: the prebaked anode after roasting, true density 2.03g/cm ³; Average loss on ignition≤3.7%; Average-volume density 1.65g/cm ³; Inside center position average-volume density 1.63g/cm ³; Average compressive strength 45MPa; There is anisotropisation characteristic; Average void content≤19.5%.

5. utilize existing prebake anode production line to be interrupted batching, a kneading pot explained hereafter prebaked anode method, it is characterized in that: material choice: adopt and produce prebaked anode after-smithing petroleum coke; Prebaked anode anode scrap; The prebaked anode moulding base returns that give up; Graphite Electrodes anode scrap; The charcoal element intermediate that prebaked anode is produced with after-smithing petroleum coke is raw material, charcoal element intermediate specification shape: Φ 45 × 30 × 25mm oval-shaped ball; Volume density 1.69g/cm ³, the bonding agent in charcoal element intermediate is 109 ℃ of hard coal-tar pitch of softening point temperature, content 10%;

Adopt the grain composition of prebaked anode production line small-particle formula: 6～3mm refinery coke 18%; 3～1mm refinery coke 12%; 1～0mm refinery coke 10%; 3～0mm prebaked anode anode scrap 5%; 12～0mm prebaked anode moulding base returns 6% that give up; ≤ 0.1mm petroleum coke powder 32%;

Add after 60% charcoal element intermediate, calculate the grain composition of prebaked anode production-line technique formula: 6～3mm refinery coke, 0.4 × 18%=7.2%; 3～1mm refinery coke, 0.4 × 12%=4.8%; 1～0mm refinery coke, 0.4 × 10%=4%; 3～0mm prebaked anode anode scrap, 0.4 × 5%=2%; 12～0mm prebaked anode moulding base returns 0.4 × 6%=2.4% that gives up; ≤ 0.1mm petroleum coke powder 0.4 × 32%=12.8%;

Finally adjust the grain composition of confirming the actual formula of prebaked anode production-line technique: 6～3mm refinery coke 4%; 3～1mm refinery coke 5%; 1～0mm refinery coke 4%; 3～0mm prebaked anode anode scrap 2%; 12～0mm prebaked anode moulding base returns 2% that give up; The bonding agent coal-tar pitch content 0.34% of bringing into; ≤ 0.1mm petroleum coke powder 12%; ≤ 0.1mm graphite anode scrap powder 1%;

Kneading: utilize burden balance, kneading pot, the batch can technique of existing prebake anode production line, produce routinely prebaked anode schedule of operation and add the various granularity raw materials after grain composition in kneading pot; Control temperature, time; Add thermal material; Add bonding agent coal-tar pitch; Mix or kneading production molding ladle;

After molding ladle kneading is good, in kneading pot, quantitatively add 150～180 ℃ of charcoal element intermediates of temperature, continue kneading 10s～60s and finish kneading, blowing is in batch can, produce routinely the cool material of prebaked anode schedule of operation, molding ladle is transported in molding device charging tank, moulding, roasting;

Prebaked anode feature: the prebaked anode after roasting, true density 2.04g/cm ³; Average loss on ignition≤3.5%; Average-volume density 1.66g/cm ³; Inside center position average-volume density 1.64g/cm ³; Average compressive strength 50MPa; There is anisotropisation characteristic; Average void content≤19.0%.

6. simple proportioning process is produced a prebaked anode method, it is characterized in that: material choice: adopt and produce prebaked anode after-smithing petroleum coke; The charcoal element intermediate that prebaked anode is produced with after-smithing petroleum coke is raw material, charcoal element intermediate specification shape: the circular spheroid of Φ 30mm; Volume density 1.69g/cm ³, the bonding agent in charcoal element intermediate is 109 ℃ of hard coal-tar pitch of softening point temperature, content 12%;

Grain composition: 5～0mm natural particle size refinery coke 12%; ≤ 0.1mm petroleum coke powder 10%;

Kneading: utilize existing prebake anode production line burden balance, be interrupted kneading pot, cool material conveyer, forming machine charging tank technique with whipping appts, 5～0 natural particle size refinery cokes ,≤0.1mm petroleum coke powder after batching are sent in kneading pot, produced routinely prebaked anode operation sequence control temperature, time; Add thermal material; Add bonding agent coal-tar pitch; Mix or kneading production molding ladle; After molding ladle kneading is good, blowing, to cool material conveyer, is produced routinely the cool material of prebaked anode schedule of operation, is transported in molding device charging tank; Meanwhile, with belted electronic balance to the charcoal element intermediate quantitatively adding in vibrating forming machine charging tank after 150～160 ℃ of firm pressure balls of temperature, reinforced end, starts forming machine charging tank whipping appts and mixes 0.5～5min, and moulding, roasting routinely prebaked anode production method are carried out;

Prebaked anode feature: the prebaked anode after roasting, true density 2.03g/cm ³; Average loss on ignition≤3.2%; Average-volume density 1.67g/cm ³; Inside center position average-volume density 1.66g/cm ³; Average compressive strength 55MPa; There is anisotropisation characteristic; Average void content≤17.5%.

7. utilize existing prebake anode production line continous batching, a kneading explained hereafter prebaked anode method, it is characterized in that: material choice: adopt and produce prebaked anode after-smithing petroleum coke; Prebaked anode anode scrap; The prebaked anode moulding base returns that give up; Graphite Electrodes anode scrap; The charcoal element intermediate that prebaked anode is produced with after-smithing petroleum coke is raw material, charcoal element intermediate specification shape: 38 × 28 × 22mm corner angle circular arc R=8mm rectangular parallelepiped; Volume density 1.69g/cm ³, the bonding agent in charcoal element intermediate is 108 ℃ of hard coal-tar pitch of softening point temperature, content 8.5%;

Adopt the grain composition of granular recipe in prebaked anode production line: 8～4mm refinery coke 11%; 4～1mm refinery coke 15%; 1～0mm refinery coke 10%; 4～0mm prebaked anode anode scrap 8%; 12～0mm prebaked anode moulding base returns 10% that give up; ≤ 0.1mm petroleum coke powder 30%;

Add after 30% charcoal element intermediate, calculate the grain composition of prebaked anode production-line technique formula: 8～4mm refinery coke, 0.7 × 11%=7.7%; 4～1mm refinery coke, 0.7 × 15%=10.5%; 1～0mm refinery coke, 0.7 × 10%=7%; 4～0mm prebaked anode anode scrap, 0.7 × 8%=5.6%; 12～0mm prebaked anode moulding base returns 0.7 × 10%=7% that gives up; ≤ 0.1mm petroleum coke powder 0.7 × 30%=21%;

Bonding agent is selected, add-on control: select 108 ℃ of hard coal-tar pitch of softening point temperature, add-on 0.7 × 16%=11.2%; Charcoal element intermediate add-on: 30%;

Finally adjust the grain composition of confirming the actual formula of prebaked anode production-line technique: 8～4mm refinery coke 4%; 4～1mm refinery coke 11%; 1～0mm refinery coke 7%; 4～0mm prebaked anode anode scrap 6%; 12～0mm prebaked anode base substrate returns 7% that give up; The bonding agent coal-tar pitch content 1.05% of bringing into; ≤ 0.1mm petroleum coke powder 20%; ≤ 0.1mm Graphite Electrodes anode scrap powder 1%;

Kneading: preheating spiral machine, continuous mixer, the cool material conveyer technique of utilizing existing prebake anode production line, by the various granularity raw materials of grain composition, belted electronic balance by separately continuously, quantitative ingredient sends into preheating spiral machine, when after preheating, material enters continuous mixer, continuous and quantitative adds bonding agent coal-tar pitch; Continuous and quantitative adds the charcoal element intermediate of 80～120 ℃ of temperature, produces routinely prebaked anode operation sequence control temperature, time, speed; Add thermal material; Mix or kneading production molding ladle, from the out good material of kneading of continuous mixer, produce routinely the cool material of prebaked anode schedule of operation, molding ladle is transported in molding device charging tank, and moulding, roasting routinely prebaked anode production method are carried out;

Prebaked anode feature: the prebaked anode after roasting, true density 2.04g/cm ³; Average loss on ignition≤4.5%; Average-volume density 1.63g/cm ³; Inside center position average-volume density 1.61g/cm ³; Average compressive strength 42MPa; There is anisotropisation characteristic; Average void content≤20%.