阅读说明：本技术 一种刚玉质压注料 (Corundum injection material ) 是由 江群英 张新财 施永益 冯青蓉 张银花 于 2020-06-16 设计创作，主要内容包括：本发明公开了一种刚玉质压注料,其特征在于：包括：氧化铝90-95份,氧化硅42-46份,氧化镁5-8份,石墨20-22份,白刚玉8-12份,硼酸8-12份,氧化钙2-6份,95％的硅微粉1-2份,三聚磷酸钠0.5-1份,六偏磷酸钠0.5-1份。本发明所述的一种刚玉质压注料,设有氧化硅42-46份,氧化镁5-8份,石墨20-22份,通过加入的氧化镁制成氧化镁形成镁铝尖晶石,因此具有良好可塑性和黏结性好、容易挤出并填满空袭和裂纹,加入硼酸8-12份,氧化钙2-6份,95％的硅微粉1-2份,三聚磷酸钠0.5-1份,六偏磷酸钠0.5-1份,使得刚玉质压注料烧结性好,强度高,耐侵蚀和抗冲刷性好,具有良好的高温机械性能及抗渣蚀性能,使得刚玉质压注料凝固比较迅速,等待时间较短。(The invention discloses a corundum injection molding material, which is characterized in that: the method comprises the following steps: 90-95 parts of aluminum oxide, 42-46 parts of silicon oxide, 5-8 parts of magnesium oxide, 20-22 parts of graphite, 8-12 parts of white corundum, 8-12 parts of boric acid, 2-6 parts of calcium oxide, 1-2 parts of 95% silicon micropowder, 0.5-1 part of sodium tripolyphosphate and 0.5-1 part of sodium hexametaphosphate. The corundum injection molding material is provided with 42-46 parts of silicon oxide, 5-8 parts of magnesium oxide and 20-22 parts of graphite, wherein magnesium oxide is prepared from added magnesium oxide to form magnesium aluminate spinel, so that the corundum injection molding material has good plasticity and cohesiveness, is easy to extrude and fill air attacks and cracks, and is added with 8-12 parts of boric acid, 2-6 parts of calcium oxide, 1-2 parts of 95% silicon micropowder, 0.5-1 part of sodium tripolyphosphate and 0.5-1 part of sodium hexametaphosphate, so that the corundum injection molding material has good sintering property, high strength, good erosion resistance and scouring resistance, good high-temperature mechanical property and slag resistance, rapid solidification of the corundum injection molding material and short waiting time.)

1. A corundum-based injection molding material, which is characterized by comprising: 90-95 parts of aluminum oxide, 42-46 parts of silicon oxide, 5-8 parts of magnesium oxide, 20-22 parts of graphite, 8-12 parts of white corundum, 8-12 parts of boric acid, 2-6 parts of calcium oxide, 1-2 parts of 95% silicon micropowder, 0.5-1 part of sodium tripolyphosphate and 0.5-1 part of sodium hexametaphosphate.

2. A corundum-based injection molding material according to claim 1, characterized in that: the particle sizes of the white corundum and the alumina are between 350 and 450 meshes.

3. A corundum-based injection molding material according to claim 1, characterized in that: the particle size of the silicon oxide is 20-27 nm.

4. A corundum-based injection molding material according to claim 1, characterized in that: 42 parts of silicon oxide, 5 parts of magnesium oxide, 20 parts of graphite, 8 parts of white jade steel, 8 parts of boric acid and 2 parts of calcium oxide.

5. A corundum-based injection molding material according to claim 1, characterized in that: 44 parts of silicon oxide, 6 parts of magnesium oxide, 21 parts of graphite, 10 parts of white jade steel, 10 parts of boric acid and 4 parts of calcium oxide.

6. A corundum-based injection molding material according to claim 1, characterized in that: 46 parts of silicon oxide, 8 parts of magnesium oxide, 22 parts of graphite, 12 parts of white jade steel, 12 parts of boric acid and 6 parts of calcium oxide.

7. A preparation method of corundum injection molding material is characterized by comprising the following steps: the method comprises the following steps:

s1, preparing the prepared raw materials and equipment, preparing the raw materials for pressing in according to requirements, and then starting the vibration mill;

s2, debugging the equipment to proper working requirements, and debugging the vibration mill to proper speed and time;

s3, inputting the raw materials into equipment for grinding and stirring, and putting the prepared raw materials into a vibration mill for grinding to fully mix the raw materials of alumina, silica, magnesia and graphite;

s4, finishing the preparation, namely after grinding and mixing, mixing the raw materials of white corundum, boric acid, calcium oxide, 95% of silicon micropowder, sodium tripolyphosphate and sodium hexametaphosphate.

And S5, taking out a sample for detection, and carrying out performance test on the prepared corundum injection molding material.

8. The method for producing a corundum-based injection molding material according to claim 7, characterized in that: the milling time in S3 was 30 minutes.

9. The method for producing a corundum-based injection molding material according to claim 7, characterized in that: the performance test temperature in the S5 is 110 ℃, and the test time is 24 hours.

Technical Field

The invention relates to the technical field of injection molding materials, in particular to a corundum injection molding material.

Background

The refractory pressure-injection material is made of refractory aggregate, powder, binder and additive, and is characterized by that when it is used, the refractory pressure-injection material is mixed with water or liquid binder, and classified, and its pressure-injection material composition includes: the high-alumina, alumina (corundum), aluminum-magnesia, aluminum-carbon and magnesium-carbon refractory injection materials are used for blast furnace tapholes, the stemming is a commonly used injection material, after each blast furnace tapping, the stemming is extruded into the taphole by a clay gun to block the taphole once and prevent molten iron from flowing out, and slag holes are also blocked by similar pugs, so the stemming for the blast furnace has enough refractoriness, the refractory injection materials are mainly applied to a blast furnace body, a hot point part of a rotary kiln lining, an RH ascending pipe and a top-bottom combined blown STB small furnace bottom, a converter tapping hole and the like, the blast furnace body is mainly repaired by using aluminum silicate and high-alumina refractory injection materials, the cement rotary kiln uses the high-alumina refractory injection materials, the STB converter and the converter tapping hole use magnesium-carbon refractory injection materials, and the RH dip pipe use corundum or aluminum-magnesium refractory injection materials. However, the existing corundum injection molding material has certain defects, and the corundum injection molding material has low viscosity, long solidification time and inconvenient follow-up work.

Disclosure of Invention

The invention mainly aims to provide a corundum injection molding material which can effectively solve the problems in the background technology.

In order to achieve the purpose, the invention adopts the technical scheme that:

a corundum-based injection molding material comprising: 90-95 parts of aluminum oxide, 42-46 parts of silicon oxide, 5-8 parts of magnesium oxide, 20-22 parts of graphite, 8-12 parts of white corundum, 8-12 parts of boric acid, 2-6 parts of calcium oxide, 1-2 parts of 95% silicon micropowder, 0.5-1 part of sodium tripolyphosphate and 0.5-1 part of sodium hexametaphosphate.

Preferably, the particle size of the white corundum and the alumina is between 350-450 meshes.

Preferably, the particle size of the silicon oxide is 20 to 27 nm.

Preferably, the silicon oxide is 42 parts, the magnesium oxide is 5 parts, the graphite is 20 parts, the white jade steel is 8 parts, the boric acid is 8 parts, and the calcium oxide is 2 parts.

Preferably, the silicon oxide is 44 parts, the magnesium oxide is 6 parts, the graphite is 21 parts, the white jade steel is 10 parts, the boric acid is 10 parts, and the calcium oxide is 4 parts.

Preferably, the silicon oxide 46 parts, the magnesium oxide 8 parts, the graphite 22 parts, the white jade steel 12 parts, the boric acid 12 parts and the calcium oxide 6 parts are prepared by adding magnesium oxide to prepare magnesium oxide to form magnesia-alumina spinel, so that the magnesium oxide has good plasticity and cohesiveness, is easy to extrude and fill air cracks.

A preparation method of corundum injection molding material comprises the following steps:

s1, preparing the prepared raw materials and equipment, preparing the raw materials for pressing in according to requirements, and then starting the vibration mill;

s2, debugging the equipment to proper working requirements, and debugging the vibration mill to proper speed and time;

s3, inputting the raw materials into equipment for grinding and stirring, and putting the prepared raw materials into a vibration mill for grinding to fully mix the raw materials of alumina, silica, magnesia and graphite;

s4, finishing the preparation, namely after grinding and mixing, putting and mixing white corundum, boric acid, calcium oxide, 95% silicon micropowder, sodium tripolyphosphate and sodium hexametaphosphate as raw materials, and finishing the preparation at the moment, so that the corundum injection material has the advantages of good sintering property, high strength, good erosion resistance and scouring resistance, good high-temperature mechanical property and slag corrosion resistance, and relatively quick solidification and relatively short waiting time of the corundum injection material.

And S5, taking out a sample for detection, and carrying out performance test on the prepared corundum injection molding material.

Preferably, the grinding time in S3 is 30 minutes.

Preferably, the performance test temperature in the S5 is 110 ℃, and the test time is 24 hours.

Compared with the prior art, the invention has the following beneficial effects: the corundum injection material is provided with 42-46 parts of silicon oxide, 5-8 parts of magnesium oxide and 20-22 parts of graphite, wherein magnesium oxide is prepared from added magnesium oxide to form magnesia-alumina spinel, so that the corundum injection material has good plasticity and cohesiveness, is easy to extrude and fill up air attack and cracks, and is added with 8-12 parts of boric acid, 2-6 parts of calcium oxide, 1-2 parts of 95% silicon micropowder, 0.5-1 part of sodium tripolyphosphate and 0.5-1 part of sodium hexametaphosphate, so that the corundum injection material has good sintering property, high strength, good erosion resistance and scouring resistance, good high-temperature mechanical property and slag corrosion resistance, and the corundum injection material is solidified more rapidly and has shorter waiting time.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

A corundum-based injection molding material comprising: 90-95 parts of aluminum oxide, 42-46 parts of silicon oxide, 5-8 parts of magnesium oxide, 20-22 parts of graphite, 8-12 parts of white corundum, 8-12 parts of boric acid, 2-6 parts of calcium oxide, 1-2 parts of 95% silicon micropowder, 0.5-1 part of sodium tripolyphosphate and 0.5-1 part of sodium hexametaphosphate;

the granularity of the white corundum and the alumina is between 350 and 450 meshes; the particle size of the silicon oxide is 20-27 nm; 42 parts of silicon oxide, 5 parts of magnesium oxide, 20 parts of graphite, 8 parts of white jade steel, 8 parts of boric acid and 2 parts of calcium oxide; 44 parts of silicon oxide, 6 parts of magnesium oxide, 21 parts of graphite, 10 parts of white jade steel, 10 parts of boric acid and 4 parts of calcium oxide; 46 parts of silicon oxide, 8 parts of magnesium oxide, 22 parts of graphite, 12 parts of white jade steel, 12 parts of boric acid and 6 parts of calcium oxide.

A preparation method of corundum injection molding material comprises the following steps:

s1, preparing the prepared raw materials and equipment, preparing the raw materials for pressing in according to requirements, and then starting the vibration mill;

s2, debugging the equipment to proper working requirements, and debugging the vibration mill to proper speed and time;

s3, inputting the raw materials into equipment for grinding and stirring, and putting the prepared raw materials into a vibration mill for grinding to fully mix the raw materials of alumina, silica, magnesia and graphite;

s4, finishing the preparation, namely after grinding and mixing, mixing the raw materials of white corundum, boric acid, calcium oxide, 95% of silicon micropowder, sodium tripolyphosphate and sodium hexametaphosphate.

S5, taking out a sample for detection, and carrying out performance test on the prepared corundum injection molding material;

the grinding time in S3 is 30 minutes; the performance test temperature in S5 was 110 ℃ and the test time was 24 hours.

The corundum injection material is prepared by preparing raw materials according to requirements when in use, and then starting a vibration mill, wherein the raw materials comprise 90-95 parts of aluminum oxide, 42-46 parts of silicon oxide, 5-8 parts of magnesium oxide, 20-22 parts of graphite, 8-12 parts of white corundum, 8-12 parts of boric acid, 2-6 parts of calcium oxide, 1-2 parts of 95% silicon micropowder, 0.5-1 part of sodium tripolyphosphate and 0.5-1 part of sodium hexametaphosphate, the vibration mill is adjusted to a proper speed and time, the grinding time is 30 minutes, the prepared raw materials are put into the vibration mill for grinding, so that the raw materials of the aluminum oxide, the silicon oxide, the magnesium oxide and the graphite are fully mixed, and then the raw materials of the white corundum, the boric acid, the calcium oxide, the 95% silicon micropowder, the sodium tripolyphosphate and the graphite are mixed, and the white corundum, the boric acid, the calcium oxide, the 95% silicon micropowder, the sodium tripolyphosphate and the calcium oxide are mixed, Mixing sodium hexametaphosphate, performing performance test on the prepared corundum injection molding material at 110 deg.C for 24 hr, is prepared from silicon oxide (42-46 wt.%), magnesium oxide (5-8), graphite (20-22), magnesium oxide prepared from magnesium oxide to obtain magnesium aluminate spinel, therefore, the adhesive has good plasticity and cohesiveness, is easy to extrude and fill up air cracks, and is added with 8 to 12 parts of boric acid, 2 to 6 parts of calcium oxide, 1 to 2 parts of 95 percent silicon micropowder, 0.5 to 1 part of sodium tripolyphosphate and 0.5 to 1 part of sodium hexametaphosphate, the corundum injection-molding material has the advantages of good sintering property, high strength, good erosion resistance and scouring resistance, good high-temperature mechanical property and slag corrosion resistance, rapid solidification of the corundum injection-molding material and short waiting time.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.