Graphite Crucibles Wholesell/High Strengh CNBM
- Ref Price:
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- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 0 m.t.
- Supply Capability:
- 10000 m.t./month
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Features
1.Long working lifetime: its working lifetime is increased 3-5 times over normal clay-crucible due to the compact body formed under high pressure.
2.High thermal conductivity: highdensity body and low apparent porosity greatly improve its heat conductivity.
3.Newstyle materials: new heat conduction material ensures faster heat conductivity and pollution-free product, reduces adherent slag.
4.Resistance to corrosion:better anti-corrosion than normal clay-crucible.
5.Resistance to oxidation: advanced process dramatically improves its oxidation resistance, which ensures persistent heat conductivity and long working lifetime.
6.High-strength: high-density body and logical structure make the product better compression property.
7.Eco-friendly: energy-efficient and pollution-free, not only ensure metal product purity, but also ensure sustainable development on environment.
8.Multi-function: Can be used in induction graphite crucible furnace
Specification
Bulk Density | g/cc | 1.70-1.88 |
Specific Resistance | μΩ.m | 6.0-15.0 |
Compressive Strength | MPa | 30-80 |
Bending Strength | MPa | 20-45 |
Shore hardness | 30-70 | |
C.T.E.(100-600°C) | x10-6 /°C | 2.5-5.5 |
Ash | % | 0.01-0.2 |
Maximum Grain Size | mm | 0.044-0 |
Product Uses
1. Graphite crucible cannot be exposed in moisture, and must be placed in indoor dry place or wooden shelf. Maintain ventilated. Moisture is strictly prohibited. Damped crucible is likely to crack.
2. Each crucible, especially damped ones, must be preheated and roasted in drying equipment or next to a ground furnace before use. The roasting temperature should start from a low temperature of 100°C below. Roast it to 150°C at a speed of not higher than 30°C per hour. Preserve the heat for about 8 hours and then dry it. The crucible dried next to a ground furnace should be placed at least for one shift, and often turned to change direction, till workers feel the internal wall of crucible is hot.
3. The melting time for the first time should be at least twice of the normal melting time, in order to avoid cracking inside the crucible due to heating up too fast, or even cracking immediately when the fire sets on.
4. Handle with care. Falling or shaking is strictly forbidden in order to present cracking. Crucible should be placed below the mouth of furnace to prevent the furnace lid abrading the upper edge of the crucible and thus affecting the capacity.
5. Pour out the remaining cold metals inside the crucible after use, and then add new materials. Carefully and gently add new materials into the crucible. Feed materials according to the capacity of crucible. It is not allowed to feed too many materials, in order to prevent crucible from swelling or bursting.
6. Knock gently to remove slags and cokes on the internal and external wall of the crucible. Avoid damaging the crucible body.
7. In the melting process, do not add chloride solvents in order not to corrode the crucible. For the furnace that uses oil and coal gas as fuels, the oil wind should not reach one part of the crucible directly. Turn around the crucible from time to time, in order to avoid local damage.
8. Clamps and other discharging tools should comply with the shape of the crucible. During furnace discharging, remove the cokes on the external wall of the crucible, and lower the furnace temperature; do not discharge at high temperature after stopping blasting. Clamp the upper and middle parts instead of the top of the crucible in order not to damage the crucible. Graphite crucible is used mainly to melt gold, silver and other precious metals.
- Q: How does carbon form?speed
- How is coal formed?Coal is known as black gold, the food industry, it is one of the main energy use of the human world since eighteenth Century. Although its important position has been replaced by oil, but in the future for a long period of time, due to the exhaustion of petroleum, inevitable decline, but because of the huge reserves of coal, and the rapid development of science and technology, the new technology of coal gasification is becoming more mature and widely used, coal will become one of the production and life of human beings in an irreplaceable energy.Coal is millions of years of plant leaves and roots, stacked on the ground with a layer of very thick black humus, due to changes in the earth's crust constantly buried underground, long isolated from the air and under high temperature and pressure, after a series of complex physical and chemical changes and other factors, the formation of black however, this fossil, is the coal forming process.The thickness of coal seam in a coal mine and the crust drop speed and accumulation amount of plant remains. The crust decreased rapidly, the plant remains piled thick, the coal seam is thick, on the other hand, the crust decline slowly, the accumulation of plant remains thin, the mine coal seam is thin. The tectonic movement of the crust to the original level of coal seam folds and faults occur, some underground coal seam buried deeper, and squeezed to the surface, even above the ground, more likely to be found. There are some relatively thin coal seam, and the area is not large, so there is no value related to the formation of coal mining, so far not find the update statement.
- Q: What is the density of carbon?
- The density of carbon depends on its form. The most common form of carbon is graphite, which has a density of 2.267 grams per cubic centimeter (g/cm³). However, another form of carbon called diamond has a much higher density of 3.515 g/cm³. So, it is important to specify which form of carbon we are referring to when discussing its density.
- Q: What is carbon neutral certification?
- Carbon neutral certification is a process by which an organization, product, or service is evaluated and verified to have a net-zero carbon footprint. This means that the entity in question has taken significant measures to reduce its greenhouse gas emissions and has offset the remaining emissions through the purchase of carbon credits or investments in projects that mitigate or remove carbon dioxide from the atmosphere. To achieve carbon neutrality, the organization or product undergoes a rigorous assessment that includes measuring its carbon emissions, setting reduction targets, implementing initiatives to reduce its carbon footprint, and tracking progress. Once the emissions have been reduced as much as possible, any remaining emissions are offset by investing in verified projects such as reforestation, renewable energy, or energy efficiency projects that remove or reduce greenhouse gases from the atmosphere. The certification process is typically carried out by an independent third-party organization that evaluates and verifies the organization's carbon neutrality claims. This ensures transparency and credibility in the certification process. Once certified, the organization or product can use the carbon neutral label to demonstrate its commitment to environmental sustainability and responsible carbon management. Carbon neutral certification is important as it provides a standardized and recognized way for organizations and products to demonstrate their commitment to combating climate change. It allows consumers and stakeholders to make informed choices by supporting entities that have taken concrete steps to reduce their carbon emissions and contribute to a more sustainable future. Additionally, carbon neutral certification encourages organizations to adopt sustainable practices and invest in projects that have a positive environmental impact, thereby accelerating the transition to a low-carbon economy.
- Q: How do forests act as carbon sinks?
- Forests act as carbon sinks by absorbing carbon dioxide from the atmosphere through the process of photosynthesis. Trees and other plants take in carbon dioxide and convert it into oxygen, while storing the carbon in their trunks, branches, and roots. This stored carbon remains in the forest ecosystem, reducing the amount of greenhouse gases in the atmosphere and helping to mitigate climate change.
- Q: How many electrons does carbon have?
- Carbon has 6 electrons.
- Q: Stability, primary carbon, two carbon, three carbon, four carbon
- From a variety of hydrogen is substituted alkyl free radicals generated in terms of difficulty order can have free radicals for the formation of tertiary carbon free radical secondary carbon free primary carbon free radicals. Alkyl radicals generated methyl easily, can be explained from two aspects: (1) different required to form free radicals when the fracture of C-H the energy, the (CH3) 3C-H fracture, the energy required for the smallest, most easily generated.
- Q: How can carbon capture and storage be implemented?
- CCS technology, which captures and stores carbon dioxide emissions from industrial processes, is crucial for preventing their release into the atmosphere. The implementation of CCS involves several key steps. First and foremost, CO2 emissions are captured from power plants, factories, and other industrial sources using different methods such as pre-combustion capture, post-combustion capture, and oxy-fuel combustion. Pre-combustion capture involves converting fossil fuels into a hydrogen and CO2 mixture, with the latter being separated and stored. Post-combustion capture removes CO2 from the flue gases after combustion. Oxy-fuel combustion, on the other hand, burns fossil fuels in pure oxygen, resulting in a flue gas that is predominantly CO2. After the capture process, the second step is transportation. The captured CO2 must be transported from the capture site to a storage site. This can be accomplished through pipelines, ships, or trucks, depending on the distance and volume of CO2. Pipelines are the most commonly used method, particularly for large-scale projects, due to their cost-effectiveness and efficiency. The third step involves storage, which entails injecting the captured CO2 deep underground into geological formations for long-term storage. The most suitable storage sites include depleted oil and gas fields, saline aquifers, and deep coal seams. These sites have the capacity to securely store significant amounts of CO2 for hundreds or even thousands of years. Monitoring and verification are crucial for ensuring the safety and effectiveness of CCS. Continuous monitoring is necessary to detect any potential leaks or seismic activities that could compromise the integrity of the storage site. Verification activities involve assessing the long-term storage of CO2 and ensuring compliance with regulations and standards. The successful implementation of CCS also requires policy support and financial incentives. Governments can provide regulatory frameworks, tax incentives, and funding to encourage the adoption of CCS technologies. International cooperation and collaboration are also vital, as CCS can be a global solution to mitigate climate change. In conclusion, the implementation of carbon capture and storage involves capturing, transporting, injecting, and monitoring CO2 emissions. It necessitates various technologies, infrastructure, and policy support for widespread adoption. By effectively implementing CCS, we can make significant reductions in greenhouse gas emissions and combat climate change.
- Q: What are the impacts of carbon emissions on the stability of estuaries?
- Carbon emissions have significant impacts on the stability of estuaries, which are delicate and unique ecosystems where freshwater and saltwater mix. One of the main consequences of carbon emissions is the phenomenon of ocean acidification. As carbon dioxide is released into the atmosphere through human activities such as burning fossil fuels, a portion of it is absorbed by the ocean, leading to an increase in the acidity of the water. This increased acidity has detrimental effects on the stability of estuaries. Estuaries are home to a diverse range of marine life, including fish, shellfish, and plants. However, the increased acidity caused by carbon emissions disrupts the delicate balance of these ecosystems. Many species of shellfish, such as oysters and clams, rely on calcium carbonate to build their shells and skeletons. In more acidic waters, the availability of carbonate ions decreases, making it harder for these organisms to form and maintain their protective structures. This can lead to a decline in shellfish populations, affecting the entire estuarine food chain. Additionally, the increased acidity affects the reproductive processes of many marine organisms. Fish and other species that reproduce in estuaries may experience reduced reproductive success due to changes in the pH of the water. This can result in a decline in population numbers, leading to a loss of biodiversity within estuaries. Furthermore, the stability of estuaries is also impacted by the rising sea levels caused by carbon emissions. As global temperatures increase, glaciers and ice caps melt, causing the sea level to rise. Estuaries, which are often located in low-lying coastal areas, are particularly vulnerable to this phenomenon. The rising sea levels can lead to increased salinity levels in estuaries, as saltwater intrudes further into freshwater areas. This can disrupt the delicate balance of the ecosystem, affecting the plants and animals that rely on specific salinity levels for survival. In conclusion, carbon emissions have a range of negative impacts on the stability of estuaries. The phenomenon of ocean acidification disrupts the delicate balance of these ecosystems, affecting the reproduction and survival of various species. Additionally, the rising sea levels caused by carbon emissions further destabilize estuaries by altering salinity levels. It is crucial to reduce carbon emissions and mitigate the effects of climate change to protect and preserve these valuable ecosystems.
- Q: How to match?Want to breed a batch of roses seedlings, but the seedbed of mud, carbon soil do not know how to get, there is help in this regard...
- Five: sowing, that is, sowing and breeding in spring. Can also be seeding and furrow sowing, usually in mid April to germination. Spring planting and transplanting time autumn planting two, usually in late autumn or early spring before the leaves after the sap flow. Grafting grafting used multiflora rootstock, grafting and grafting of two points. Autumn budding survival rate, grafting position close to the ground as far as possible, the specific method is: in the side branch with rootstock grafting knife on the skin do "T" shaped incision, and then rose from the year growth of branches in a good selection of bud. Insert the bud into the "T" incision, then tie it with a plastic bag and shade properly so that it will heal in about two weeks. Plant ramets breeding more in late autumn or early spring, is the whole rose out of ramets soil, each plant has 1 to 2 branches and with some fibrous roots, the colonization in the basin or open, then can blossom. Cutting method in late autumn or early spring rose dormancy, their mature with 3 to 4 shoots cuttings. If the shoots are cut, shade properly and keep the seedbed moist. After cutting, the root can take root in 30 days, and the survival rate is from 70% to 80%. If the cuttings are dipped in the root, the survival rate will be higher. Layerage general in the summer, is the rose from parent branches bent down and pressed into soil, buried in the central branches, the lower half circle of the bark off, exposing branch end, the branches grow adventitious roots and grow new leaves, and then cut off the mother. As for the preparation of nutritious peat soil according to the following formula: two (1) mixture of peat mire soil and vermiculite, the proportion (by dry weight) for each 1/2 or 3/5:1/4; 2/5 or 3/4:1/4, then add the right amount of limestone (dolomite) and sandy fertilizer. (2) peat swamp soil 25-50%, vermiculite 0-25%, plus 50% of the soil. All of the above materials have been bought in the flower market.
- Q: There are several allotropes of carbon
- Allotrope of carbon: diamond, graphite, carbon 60 (fullerene), amorphous carbon (charcoal, coke, activated carbon, etc.)
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Graphite Crucibles Wholesell/High Strengh CNBM
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 0 m.t.
- Supply Capability:
- 10000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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