CN104962689A - Hollow glass microbead-doped porous efficient recarburizing agent recycling waste graphite electrode, and preparation method thereof - Google Patents

Abstract

The present invention relates to the field of recarburizing agents, particularly to a hollow glass microbead-doped porous efficient recarburizing agent recycling waste graphite electrode, and a preparation method thereof. According to the present invention, waste graphite electrode is adopted as a carbon material, and water glass, ammonium bicarbonate, polyethylene glycol 400 and other composite materials are used to prepare a binder; after the recarburizing agent is subjected to a high temperature firing process, the recarburizing agent has characteristics of compact and porous structure, and rapid fusion; with the added hollow glass microbeads, nanometer titanium dioxide and other ingredients, the thermal stability of the material can be improved, the impact resistance of the product can be improved, and the recarburizing process can be accelerated; silicon micro-particles are adhered on the material surface through the dried silica sol sprayed on the billet material surface so as to promote the smelting solution graphitization process and improve the material utilization rate; and the prepared recarburizing agent has characteristics of high carbon content, stable form performance, rapid and efficient recarburizing, high performance price ratio of the finished product, and effective metal product quality improving.

Description

Porous high-efficiency carburelant of a kind of doped hollow glass microballon of huge profit barren rock electrode ink and preparation method thereof

Technical field

The present invention relates to carburelant field, be specifically related to porous high-efficiency carburelant of a kind of doped hollow glass microballon of huge profit barren rock electrode ink and preparation method thereof.

Background technology

In smelting process, due to reasons such as batching, the improper or decarburization of feeding are excessive, carbon content in material is caused not reach the standard of expection, directly have influence on the performance of product, therefore, need in process of production to add carburelant, select suitable carburelant to contribute to reducing smelting production cost, improve the quality of metal smelting and foundry goods, increase the benefit; Conventional carburelant is by synthetic graphite, calcined petroleum coke, natural graphite, coke, hard coal and the mixture that is made up of these materials, but these materials exist when reality uses defects such as cost is higher, foreign matter content is high, melt poor effect, utilization ratio is low.

Summary of the invention

The object of the invention is to, prepare a kind of carburelant using discarded Graphite Electrodes as major ingredient, on the basis reducing production cost, obtain more efficient carburetting effect, improve material use efficiency, to achieve these goals, the technical scheme of employing is as follows:

A kind of porous high-efficiency carburelant of doped hollow glass microballon of huge profit barren rock electrode ink, it is characterized in that, this carburelant is made up of the raw material of following weight part: hollow glass micropearl 1-2, nano titanium oxide 0.1-0.2, barren rock electrode ink 50-60, water glass 0.2-0.5, bicarbonate of ammonia 0.1-0.2, maize straw ash 0.2-0.3, poly(oxyethylene glycol) 400 0.2-0.5, solid content are that the silicon sol of 10-15% is appropriate, water 10-20.

The preparation method of the porous high-efficiency carburelant of the doped hollow glass microballon of described a kind of huge profit barren rock electrode ink is:

(1) first soak 30-50min by the dilute hydrochloric acid solution of barren rock electrode ink input 0.1mol/L, remove disacidify by clean water subsequently, then electrode is dropped in the aqueous ethanolic solution of 5%, ultrasonic cleaning 5-6h, cleaning terminates rear complete drying, and be ground into the particle of particle diameter≤0.5mm, resulting materials is for subsequent use;

(2) water glass, poly(oxyethylene glycol) 400, bicarbonate of ammonia are dropped in water, be stirred to material and dissolve completely, drop into maize straw ash more subsequently, high-speed stirring mixing 40-50min, obtains binding agent for subsequent use;

(3) material of step (1) gained is mixed with the binding agent of step (2) gained and other leftover materials except silicon sol, high-speed stirring evenly uses ball press pressed compact shaping afterwards, the particle diameter of base substrate is 10-20mm, length is 1-5cm, subsequently by base substrate dry 3-4h at 180-200 DEG C, when blank is cooled to 70-80 DEG C, taking with blank mass ratio is the silicon sol of 0.1:1, by its even application in blank surface, after spraying, constant temperature places 2-3h, naturally cool to room temperature subsequently, get product.

Carburelant of the present invention is using the barren rock electrode ink after removal of impurities process as carbon material, reduce production cost, and with water glass, bicarbonate of ammonia, binding agent prepared by the matrix materials such as poly(oxyethylene glycol) 400, foreign matter content is low, this carburelant is after high-temperature firing, there is the structure of porous of compacting, accelerate the speed of fusing into, the hollow glass micropearl added, the compositions such as nano titanium oxide can improve the thermostability of material, improve goods shock resistance, accelerate carburetting process, at material surface adhesive silicone particulate after the silicon sol drying of blank surface spraying, promote melting liquid greying process, improve the utilization ratio of material, carburelant carbon content prepared by the present invention is high, form stable performance, and rapidly and efficiently, finished product cost performance is high in carburetting, effectively raises the quality of metal products.

Embodiment

Embodiment

The present embodiment carburelant is made up of following raw material: hollow glass micropearl 1.4, nano titanium oxide 0.1, barren rock electrode ink 58, water glass 0.4, bicarbonate of ammonia 0.1, maize straw ash 0.3, poly(oxyethylene glycol) 400 0.4, solid content are appropriate, the water 15 of silicon sol of 10%.

Its preparation method is:

(1) first soak 45min by the dilute hydrochloric acid solution of barren rock electrode ink input 0.1mol/L, remove disacidify by clean water subsequently, then electrode is dropped in the aqueous ethanolic solution of 5%, ultrasonic cleaning 5.8h, cleaning terminates rear complete drying, and be ground into the particle of particle diameter≤0.5mm, resulting materials is for subsequent use;

(2) water glass, poly(oxyethylene glycol) 400, bicarbonate of ammonia are dropped in water, be stirred to material and dissolve completely, drop into maize straw ash more subsequently, high-speed stirring mixing 45min, obtains binding agent for subsequent use;

(3) material of step (1) gained is mixed with the binding agent of step (2) gained and other leftover materials except silicon sol, high-speed stirring evenly uses ball press pressed compact shaping afterwards, the particle diameter of base substrate is 20mm, and length is 5cm, subsequently by base substrate dry 5h at 180-200 DEG C, when blank is cooled to 70-80 DEG C, taking with blank mass ratio is the silicon sol of 0.1:1, and by its even application in blank surface, after spraying, constant temperature places 3h, naturally cool to room temperature subsequently, get product.

Water content≤0.2% in the carburelant that the present embodiment is obtained, sulphur content≤0.1%, phosphorus content≤0.1%, ash content≤1.5%, be applied to HT200 grey cast iron fusion process, detected result shows, it is faster that this carburelant fuses into speed compared with the carburelant of traditional type, carbon specific absorption reaches more than 95%, the foundry goods longer service life obtained.

Claims (2)

1. the huge profit porous high-efficiency carburelant of the doped hollow glass microballon of barren rock electrode ink, it is characterized in that, this carburelant is made up of the raw material of following weight part: hollow glass micropearl 1-2, nano titanium oxide 0.1-0.2, barren rock electrode ink 50-60, water glass 0.2-0.5, bicarbonate of ammonia 0.1-0.2, maize straw ash 0.2-0.3, poly(oxyethylene glycol) 400 0.2-0.5, solid content are that the silicon sol of 10-15% is appropriate, water 10-20.

2. the porous high-efficiency carburelant and preparation method thereof of the doped hollow glass microballon of a kind of huge profit barren rock electrode ink as claimed in claim 1, is characterized in that, comprise following steps:

(1) first soak 30-50min by the dilute hydrochloric acid solution of barren rock electrode ink input 0.1mol/L, remove disacidify by clean water subsequently, then electrode is dropped in the aqueous ethanolic solution of 5%, ultrasonic cleaning 5-6h, cleaning terminates rear complete drying, and be ground into the particle of particle diameter≤0.5mm, resulting materials is for subsequent use;

(2) water glass, poly(oxyethylene glycol) 400, bicarbonate of ammonia are dropped in water, be stirred to material and dissolve completely, drop into maize straw ash more subsequently, high-speed stirring mixing 40-50min, obtains binding agent for subsequent use;

(3) material of step (1) gained is mixed with the binding agent of step (2) gained and other leftover materials except silicon sol, high-speed stirring evenly uses ball press pressed compact shaping afterwards, the particle diameter of base substrate is 10-20mm, length is 1-5cm, subsequently by base substrate dry 3-4h at 180-200 DEG C, when blank is cooled to 70-80 DEG C, taking with blank mass ratio is the silicon sol of 0.1:1, by its even application in blank surface, after spraying, constant temperature places 2-3h, naturally cool to room temperature subsequently, get product.