CN111589372A - Mixed production process of heating element raw materials of cubic press - Google Patents
Mixed production process of heating element raw materials of cubic press Download PDFInfo
- Publication number
- CN111589372A CN111589372A CN202010379827.3A CN202010379827A CN111589372A CN 111589372 A CN111589372 A CN 111589372A CN 202010379827 A CN202010379827 A CN 202010379827A CN 111589372 A CN111589372 A CN 111589372A
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- raw materials
- sodium silicate
- heating element
- mixing
- cubic press
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
- B01J3/06—Processes using ultra-high pressure, e.g. for the formation of diamonds; Apparatus therefor, e.g. moulds or dies
- B01J3/062—Processes using ultra-high pressure, e.g. for the formation of diamonds; Apparatus therefor, e.g. moulds or dies characterised by the composition of the materials to be processed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
- B01J3/06—Processes using ultra-high pressure, e.g. for the formation of diamonds; Apparatus therefor, e.g. moulds or dies
- B01J3/065—Presses for the formation of diamonds or boronitrides
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Ceramic Products (AREA)
Abstract
The invention provides a mixing process of heating element raw materials of a cubic press, which comprises the following steps of firstly mixing dolomite powder, solid sodium silicate and graphite powder according to the weight ratio of 93.5-94: 2-5: 0.8-4.5, mixing for 5-10 minutes to obtain a mixture, spraying water into the mixture, stirring simultaneously, and stirring for 10-20 minutes to obtain slurry; wherein the spraying amount of the water accounts for 1.5-3% of the weight of the mixture. The invention takes solid sodium silicate as a binder, can effectively reduce the occurrence of hardened lumps and ensure the uniformity of mixing raw materials.
Description
Technical Field
The invention belongs to the technical field of cubic presses, and particularly relates to a mixing process of heating element raw materials of a cubic press.
Background
In the synthetic process of the artificial diamond, the diamond is generated under certain pressure and temperature conditions, the pressure generates high pressure through a cubic extrusion synthetic block, the temperature generates high temperature through electrifying a heating element in a synthetic cavity, the raw material of the heating element is generally prepared by mixing liquid sodium silicate as a binder with dolomite powder and other powder according to certain component proportion, but the synthetic method has the following defects: the method comprises the following steps that firstly, a large amount of hardened lumps are generated in the mixing process of liquid sodium silicate and dolomite powder, and the uniformity of mixed raw materials is poor, so that the resistance difference of each part in diamond synthesis is large; secondly, the liquid sodium silicate and the dolomite powder are mixed and then need to be heated, stirred and dried, so that the time and the power are consumed, and the production efficiency is low; the environmental pollution is large; liquid sodium silicate is difficult to transport, and the transport cost is high; the liquid sodium silicate needs to be stored in a special storage tank, and in winter, the liquid sodium silicate is viscous and needs to be heated for use, but the heated liquid sodium silicate also has certain influence on the quality of the mixed raw materials.
Disclosure of Invention
The invention provides a mixing process of heating element raw materials of a cubic press, aiming at the defects that the heating element raw materials of the cubic press in the prior art use liquid sodium silicate as a binder, wherein solid sodium silicate is used as the binder, so that the occurrence of hardened lumps can be effectively reduced, and the uniformity of mixing of the raw materials is ensured.
In order to achieve the purpose, the invention adopts the following technical scheme:
a mixing technology for heating element raw materials of a cubic press is characterized in that at room temperature, dolomite powder, solid sodium silicate and graphite powder are mixed according to the weight ratio of 93.5-94: 2-5: 0.8-4.5, mixing for 5-10 minutes to obtain a mixture, spraying water into the mixture, stirring simultaneously, and stirring for 10-20 minutes to obtain slurry; wherein the spraying amount of the water accounts for 1.5 to 3 percent of the weight of the mixture
Wherein the molecular formula of the sodium silicate is Na2O·nSiO2CAS No. 1344-09-8, modulus in sodium silicate n = SiO2/Na2O (molar ratio), the modulus of which shows the composition of sodium silicate, is an important parameter of sodium silicate and is generally between 1.5 and 3.5. The larger the modulus, the less soluble the solid sodium silicateWater, n is 1, and can be dissolved by warm water at all times, when n is increased, hot water is needed for dissolution, and when n is more than 3, steam with the pressure of more than 4 atmospheres is needed for dissolution. In the present invention, the modulus of the solid sodium silicate is preferably 2.3 ± 0.1.
Preferably, the dolomite powder has a particle size as follows: 30-50 meshes accounting for 70 wt%; 50-80 mesh accounts for 20 wt%; 80 mesh is 10 wt% in fine.
Preferably, the particle size of the solid sodium silicate is 200-300 meshes.
Preferably, the particle size of the graphite powder is 200-400 meshes.
The invention has the following beneficial effects:
the invention provides a material mixing process of heating element raw materials of a cubic press, which is characterized in that solid sodium silicate is used for replacing liquid sodium silicate as a binder to be mixed with dolomite powder and other powder materials according to a certain component proportion, so that the requirement of material mixing uniformity can be met, the generation of hardened lumps is avoided, the material mixing dryness and humidity are automatically adjusted, heating and drying are not needed, the production efficiency and the product quality of artificial diamond are improved, the solid sodium silicate is not needed to be stored in a special storage tank, the transportation is convenient, the cost is low, the storage is convenient, the material mixing quality is not influenced by the change of weather, a large amount of electric power can be saved, and the pollution is reduced.
Detailed Description
In order to make the technical purpose, technical solutions and advantageous effects of the present invention more clear, the technical solutions of the present invention are further described below with reference to specific embodiments.
Example 1
At room temperature, 94% of dolomite powder, 5% of solid sodium silicate and 1% of graphite powder are poured into a mixer in a certain sequence, after 5 minutes of mixing is required, water is sprayed into the mixer through a liquid spraying device according to the weight ratio of 1.5% and is stirred for 10 minutes, a 15-mesh screen is arranged below the mixer, and a very small amount of hardened lumps are sieved out through a linear screen.
The solid sodium silicate generates heat when meeting water, so that the material dryness and humidity quickly meet the process requirements in the stirring process, the stirring and drying time is reduced, the production efficiency is improved, the consumption of electric resources is greatly reduced, and the environmental pollution is reduced.
Example 2
At room temperature, firstly, 93.5 percent of dolomite powder, 3 percent of solid sodium silicate and 3.5 percent of graphite powder are poured into a mixer in a certain sequence, after the mixture is required for 8 minutes, water is sprayed into the mixer by a liquid spraying device according to the weight ratio of 3 percent and is stirred for 15 minutes, a 20-mesh screen is arranged below the mixer, and a very small amount of hardened lumps are sieved out by the linear screen.
Example 3
At room temperature, firstly, 93.8 percent of dolomite powder, 4 percent of solid sodium silicate and 2.2 percent of graphite powder are poured into a mixer in a certain sequence, after the mixture is required for 10 minutes, water is sprayed into the mixer by a liquid spraying device according to the weight ratio of 2 percent and is stirred for 20 minutes, a 24-mesh screen is arranged below the mixer, and a very small amount of hardened lumps are sieved out by the linear screen.
According to the invention, by mixing the solid sodium silicate, the mixing uniformity is improved, more hardened lumps are avoided, the hardening proportion of the liquid sodium silicate is about 10%, and the hardening proportion of the solid sodium silicate is not more than 1.5%, so that the difference of resistance of each part in diamond synthesis is reduced, the diamond synthesis quality is improved, the solid sodium silicate is convenient to transport, does not need to be stored in a special storage tank, and the mixing quality is not influenced by the change of weather.
Finally, it should be noted that: the above embodiments are merely illustrative and not restrictive of the technical solutions of the present invention, and any equivalent substitutions and modifications or partial substitutions made without departing from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.
Claims (5)
1. The mixing process of heating element raw materials of the cubic press is characterized in that: at room temperature, firstly, mixing dolomite powder, solid sodium silicate and graphite powder according to the weight ratio of 93.5-94: 2-5: 0.8-4.5, mixing for 5-10 minutes to obtain a mixture, spraying water into the mixture, stirring simultaneously, and stirring for 10-20 minutes to obtain slurry; wherein the spraying amount of the water accounts for 1.5-3% of the weight of the mixture.
2. The hybrid process of heating element raw materials of a cubic press as set forth in claim 1, characterized in that: the modulus of the solid sodium silicate is 2.3 +/-0.1.
3. The hybrid manufacturing process of heating element raw materials of a cubic press according to claim 1, wherein the grain size of the dolomite powder is as follows: 30-50 meshes accounting for 70 wt%; 50-80 mesh accounts for 20 wt%; 80 mesh is 10 wt% in fine.
4. The hybrid process of heating element raw materials of a cubic press as set forth in claim 1, characterized in that: the particle size of the solid sodium silicate is 200-300 meshes.
5. The hybrid process of heating element raw materials of a cubic press as set forth in claim 1, characterized in that: the granularity of the graphite powder is 200-400 meshes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010379827.3A CN111589372A (en) | 2020-05-08 | 2020-05-08 | Mixed production process of heating element raw materials of cubic press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010379827.3A CN111589372A (en) | 2020-05-08 | 2020-05-08 | Mixed production process of heating element raw materials of cubic press |
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| Publication Number | Publication Date |
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| CN111589372A true CN111589372A (en) | 2020-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010379827.3A Pending CN111589372A (en) | 2020-05-08 | 2020-05-08 | Mixed production process of heating element raw materials of cubic press |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114455930A (en) * | 2022-01-11 | 2022-05-10 | 郑州中南杰特超硬材料有限公司 | Preparation method of dolomite composite material |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6124573A (en) * | 1999-12-28 | 2000-09-26 | Hall; David R. | Metallized graphite heater for a high-pressure high-temperature reaction vessel |
| CN1579610A (en) * | 2003-08-14 | 2005-02-16 | 自贡市中新金刚石碳片厂 | Heating and heat-insulating carbon sheet for synthesizing diamond by sheet process and its production method |
| CN2790572Y (en) * | 2004-10-29 | 2006-06-28 | 郑州人造金刚石及制品工程技术研究中心 | Medium for synthesizing diamond |
| CN201399336Y (en) * | 2009-04-17 | 2010-02-10 | 上海琦实超硬材料有限公司 | Dolomite heat preservation piece |
| CN103949189A (en) * | 2014-05-14 | 2014-07-30 | 河南飞孟金刚石工业有限公司 | Heating sheet for synthesizing polycrystalline diamond and preparation method of heating sheet |
| CN209631160U (en) * | 2019-02-19 | 2019-11-15 | 河南晶锐新材料股份有限公司 | A kind of composite polycrystal-diamond Synthetic block |
| CN110549035A (en) * | 2019-10-14 | 2019-12-10 | 湘潭大学 | Composite powder of submerged arc surfacing high-boron alloy and application method thereof |
-
2020
- 2020-05-08 CN CN202010379827.3A patent/CN111589372A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6124573A (en) * | 1999-12-28 | 2000-09-26 | Hall; David R. | Metallized graphite heater for a high-pressure high-temperature reaction vessel |
| CN1579610A (en) * | 2003-08-14 | 2005-02-16 | 自贡市中新金刚石碳片厂 | Heating and heat-insulating carbon sheet for synthesizing diamond by sheet process and its production method |
| CN2790572Y (en) * | 2004-10-29 | 2006-06-28 | 郑州人造金刚石及制品工程技术研究中心 | Medium for synthesizing diamond |
| CN201399336Y (en) * | 2009-04-17 | 2010-02-10 | 上海琦实超硬材料有限公司 | Dolomite heat preservation piece |
| CN103949189A (en) * | 2014-05-14 | 2014-07-30 | 河南飞孟金刚石工业有限公司 | Heating sheet for synthesizing polycrystalline diamond and preparation method of heating sheet |
| CN209631160U (en) * | 2019-02-19 | 2019-11-15 | 河南晶锐新材料股份有限公司 | A kind of composite polycrystal-diamond Synthetic block |
| CN110549035A (en) * | 2019-10-14 | 2019-12-10 | 湘潭大学 | Composite powder of submerged arc surfacing high-boron alloy and application method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114455930A (en) * | 2022-01-11 | 2022-05-10 | 郑州中南杰特超硬材料有限公司 | Preparation method of dolomite composite material |
| CN114455930B (en) * | 2022-01-11 | 2022-11-25 | 郑州中南杰特超硬材料有限公司 | Preparation method of dolomite composite material |
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Application publication date: 20200828 |