Ceramic Graphite Crucibles/CNBM Ceramic Crucibles For Melt Aluminum
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 0 m.t.
- Supply Capability:
- 100000 m.t./month
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Features
1.Material:high pure graphite
2.Used for metal melting
3.Long life and good property
Product Description
The material of graphite crucible can be divided into artificial graphite,clay bonded graphite, and carbon bonded graphite.Artificial graphite crucible is made of graphite electrode as material and made out.
Clay bonded graphite, the main ingredient is natural crystal graphite and clay Now only used in small amount of high-temperature melting of cast iron, cast steel melting and melting of precious metals.
Carbon bonded graphite, the main ingredient is natural crystal graphite and silicon carbide. Mainly used in the melting of the majority of non-ferrous metals such as copper alloy and aluminum alloy.
Specification
a. High thermal conductivity
b.Thermal shock resistance
c.High temperature resistance
d.Corrosion resistance
d. Mechanical shocks resistance
d. Oxidation resistance
e. Anti-adhesive
f. Small metal contamination
g. Good clearner
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 |
Picture
- Q: How does carbon impact the structure and function of ecosystems?
- Carbon plays a crucial role in shaping the structure and function of ecosystems. It is a fundamental building block of life and is involved in various biological processes. Carbon is the primary component of organic matter, such as plants, animals, and microorganisms, which form the basis of food webs and provide energy to other organisms. Carbon dioxide (CO2) is also an essential greenhouse gas that regulates the Earth's temperature. Through photosynthesis, plants absorb CO2 from the atmosphere and convert it into organic carbon compounds, releasing oxygen as a byproduct. This process not only fuels the growth of plants but also maintains the balance of atmospheric gases, supporting life on Earth. Additionally, carbon influences the cycling of nutrients within ecosystems. Decomposition of organic matter by decomposers releases carbon back into the environment, enabling its reuse by other organisms. This carbon cycling is vital for nutrient availability and contributes to the overall productivity of ecosystems. However, human activities, such as burning fossil fuels and deforestation, have significantly increased carbon dioxide levels in the atmosphere. This excess carbon disrupts the natural balance, leading to climate change and its associated impacts on ecosystems. Rising temperatures, altered precipitation patterns, and ocean acidification are some of the consequences of increased carbon emissions, which can negatively affect the structure and function of ecosystems, including biodiversity loss, habitat degradation, and disrupted ecological interactions. In summary, carbon is essential for the structure and function of ecosystems. Its involvement in energy transfer, nutrient cycling, and climate regulation highlights its significance in maintaining ecological balance. However, the excessive release of carbon dioxide by human activities has detrimental effects on ecosystems, emphasizing the need for sustainable practices to mitigate these impacts.
- 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 are the impacts of carbon emissions on the stability of polar ice caps?
- The stability of polar ice caps is significantly affected by carbon emissions, which arise primarily from the burning of fossil fuels. This process releases substantial amounts of carbon dioxide into the atmosphere, a greenhouse gas that traps heat and contributes to global warming and climate change. Consequently, the ice caps in the polar regions, which are extremely sensitive to temperature changes, experience accelerated melting as the Earth's temperature rises due to increased carbon emissions. This leads to a rise in sea levels, with far-reaching consequences for coastal regions globally, including increased flooding, erosion, and the loss of valuable coastal ecosystems. Furthermore, the preservation of the polar ice caps is vital for maintaining the Earth's climate balance. These ice caps play a crucial role in reflecting sunlight back into space, serving as a natural cooling mechanism for the planet. However, as they melt, less sunlight is reflected, resulting in more absorption by the Earth's surface and exacerbating the warming effect. This creates a feedback loop, where the melting of ice caps leads to further warming, causing more ice to melt. The impacts of carbon emissions on polar ice caps extend beyond rising sea levels and climate change. The loss of ice also disrupts the delicate balance of ecosystems in these regions. Polar ice caps provide habitat and sustenance for a diverse range of organisms, including polar bears, seals, and various species of birds. Consequently, the melting of ice disrupts these ecosystems, leading to declines in wildlife populations and potential extinctions. Moreover, the melting of polar ice caps also has repercussions for global ocean currents and weather patterns. The melting ice forms cold, dense water that sinks to the bottom of the ocean and drives crucial oceanic circulation patterns. Changes in these patterns can have far-reaching consequences, such as altering the distribution of marine species, impacting fisheries, and influencing regional climates. To mitigate the impacts of carbon emissions on polar ice caps, it is essential to reduce greenhouse gas emissions and transition to cleaner and renewable energy sources. International initiatives, such as the Paris Agreement, are aimed at limiting global warming and reducing carbon emissions to prevent further melting of the ice caps. Additionally, supporting research and monitoring programs in polar regions can enhance our understanding of these complex systems and facilitate the development of effective conservation strategies.
- Q: What are the consequences of increased carbon emissions on vulnerable communities?
- Increased carbon emissions have severe consequences on vulnerable communities. Firstly, these communities often lack the resources and infrastructure to adapt to and mitigate the effects of climate change. As carbon emissions contribute to global warming, vulnerable communities are more likely to experience extreme weather events such as hurricanes, floods, and heatwaves. These events can result in displacement, loss of homes, and even loss of lives, disproportionately impacting those who are already marginalized. Furthermore, increased carbon emissions contribute to air pollution, which poses significant health risks to vulnerable communities. People living in low-income areas often reside near industrial plants or highways with high levels of emissions, leading to an increased risk of respiratory diseases, cardiovascular problems, and other health issues. Children, the elderly, and individuals with pre-existing health conditions are particularly vulnerable. The consequences of increased carbon emissions also extend to food security. Climate change affects agriculture and alters growing seasons, leading to reduced crop yields and food shortages. Vulnerable communities heavily reliant on subsistence farming or areas prone to droughts or floods face the risk of malnutrition and hunger. This exacerbates existing inequalities and can lead to social unrest and economic instability. In addition, vulnerable communities often rely on natural resources for their livelihoods, such as fishing, forestry, or tourism. The negative impacts of carbon emissions, like ocean acidification and coral bleaching, threaten these industries, resulting in job losses and economic decline. This further perpetuates the cycle of poverty and socio-economic vulnerability. Ultimately, increased carbon emissions disproportionately harm vulnerable communities by amplifying existing inequalities and exacerbating the challenges they face. It is crucial to address these consequences through climate mitigation efforts, adaptation strategies, and support for sustainable development.
- Q: What is latent carbon?
- With prochiral carbon atoms called prochiral molecules.For potential chiral compounds, can also be used to determine the order of rule configuration. For example, an atom of hydrogen by deuterium methylene propionate (D) replaced, if converted into R configuration, the hydrogen atom is called latent -R (pro-R) hydrogen atoms into S; if the configuration is called latent -S (pro-S the hydrogen atom).For medical workers, prochiral is an important concept. Almost all of the biological chemical reaction is controlled by the enzyme, the enzyme for prochiral molecules not symmetrically reaction, so they are able to identify two identical atoms or atomic groups, because they are chiral compounds. For example two methylene citric acid and only one methylene by enzymes (from rat liver) into carbonyl group.
- Q: How does deforestation contribute to carbon emissions?
- Deforestation plays a significant role in contributing to carbon emissions. When forests are cleared or burned down, the carbon stored in trees and vegetation is released into the atmosphere in the form of carbon dioxide (CO2), a greenhouse gas that contributes to global warming. Forests act as natural carbon sinks, absorbing CO2 from the atmosphere through the process of photosynthesis. Trees and plants convert CO2 into oxygen and store the carbon in their trunks, branches, leaves, and roots. This process helps to regulate the Earth's climate by reducing the concentration of CO2 in the atmosphere. However, when forests are deforested, this natural carbon storage system is disrupted. The carbon that was once stored in trees and vegetation is released back into the atmosphere, increasing the concentration of CO2. This process is further exacerbated when forests are burned, as the combustion of trees and plant material releases even larger amounts of carbon. The loss of forests also leads to a decrease in biodiversity and the destruction of habitats for numerous species, which in turn disrupts the delicate balance of ecosystems. As these ecosystems are disrupted, they become less efficient at absorbing and storing carbon, further contributing to increased carbon emissions. Moreover, deforestation contributes to carbon emissions indirectly through several other means. For instance, when trees are cleared, the soil beneath becomes exposed to sunlight and heat, causing it to dry and release stored carbon. Additionally, deforestation often leads to the conversion of land for agricultural purposes, such as livestock farming or palm oil plantations, which can result in increased methane emissions, another potent greenhouse gas. In summary, deforestation contributes to carbon emissions by releasing the stored carbon in trees and vegetation, disrupting the natural carbon storage system, and indirectly contributing to the release of other greenhouse gases. It is crucial to address deforestation and promote sustainable land management practices to mitigate the effects of climate change and reduce carbon emissions.
- Q: What is carbon capture and storage?
- The aim of carbon capture and storage (CCS) technology is to lessen carbon dioxide (CO2) emissions from major sources like industrial processes, power plants, and others. It works by capturing CO2 emissions before they are released into the atmosphere and then storing them securely underground. To capture carbon, specialized equipment is typically used to trap CO2 from flue gases or industrial processes. The captured CO2 is then compressed and transported through pipelines or ships to a suitable storage site located deep underground. These storage sites can include depleted oil and gas fields, saline aquifers, or deep coal seams. The storage process ensures long-term containment of CO2 and reduces the risk of leakage. This is achieved by monitoring the storage site for signs of leakage, maintaining the integrity of the storage infrastructure, and selecting suitable sites with geological features that aid in long-term CO2 containment. Carbon capture and storage has the potential to greatly reduce CO2 emissions and contribute to climate change mitigation. By capturing and storing CO2 instead of releasing it into the atmosphere, industries can continue using fossil fuels while minimizing their environmental impact. This is particularly beneficial for industries that are challenging to decarbonize, such as cement production, steel manufacturing, and natural gas power plants. Despite its promise, the widespread implementation of carbon capture and storage faces challenges and limitations. One significant challenge is the high cost associated with establishing CCS infrastructure and operations. Additionally, finding suitable storage sites and addressing public concerns about the safety and environmental impact of underground CO2 injection can pose significant obstacles. Nevertheless, carbon capture and storage is considered an essential tool in the battle against climate change. It can play a crucial role in achieving global emission reduction goals and transitioning to a low-carbon economy. With advancing technology and decreasing costs, the widespread adoption of carbon capture and storage may become increasingly feasible and necessary.
- Q: How is carbon used in the production of fuels?
- Fuels production heavily relies on carbon, which serves as the primary element in fossil fuels like coal, oil, and natural gas. These fuels are formed through the decomposition of ancient plants and animals over millions of years, a process called carbonization. Carbonization involves subjecting organic materials to prolonged exposure to high temperature and pressure, resulting in the formation of hydrocarbon-rich substances. For instance, coal consists mainly of carbon, with traces of other elements. When coal is burned, the carbon reacts with oxygen, releasing heat energy. This heat can be utilized to generate steam, which then powers turbines for electricity production or industrial engines. Similarly, oil and natural gas, which are predominantly carbon-based, are extracted from underground reservoirs. These hydrocarbons can undergo refining to produce various fuel types such as gasoline, diesel, and jet fuel. The combustion of these fuels in engines or power plants releases energy for transportation and electricity generation. Aside from fossil fuels, carbon plays a crucial role in the production of alternative fuels like biofuels. Biofuels are derived from renewable sources such as plants, algae, or agricultural waste. The carbon within these organic materials can be converted into ethanol or biodiesel through processes like fermentation or transesterification, respectively. These biofuels can then be used as substitutes for conventional fuels, reducing greenhouse gas emissions and lessening reliance on non-renewable resources. In conclusion, carbon is a vital component in fuel production, whether obtained from fossil fuels or renewable sources. Its combustion generates energy that powers various sectors including electricity, transportation, and industry. Nevertheless, it is crucial to explore and adopt sustainable alternatives like biofuels and renewable energy sources to mitigate the negative environmental impacts associated with carbon emissions.
- Q: What is the importance of carbon dating in archaeology?
- Carbon dating is crucial in archaeology as it allows us to determine the age of artifacts and remains with remarkable accuracy. By analyzing the levels of carbon-14 isotopes in organic materials, we can establish when they were last alive or in use. This information provides valuable insights into the chronology of human history, enabling archaeologists to reconstruct past civilizations, understand cultural changes, and refine our understanding of the past.
- Q: How is carbon used in water filtration systems?
- Carbon is commonly used in water filtration systems due to its impressive adsorption properties. Adsorption involves the molecules of a substance binding to the surface of another material, in this case, carbon. Activated carbon, which is carbon that has been specially processed to create a large surface area, is particularly effective in water filtration. When water passes through the filtration system, the carbon captures and retains a wide range of impurities, including organic compounds, chlorine, volatile organic compounds (VOCs), and certain heavy metals. This adsorption process helps to remove unpleasant odors and tastes from the water, making it more palatable. Carbon also plays a crucial role in removing potentially harmful contaminants such as pesticides, herbicides, and pharmaceutical residues. Additionally, carbon filtration systems can help reduce the risk of waterborne illnesses by removing bacteria, viruses, and parasites. Overall, carbon is an essential component of water filtration systems as it significantly improves the quality and safety of drinking water.
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Ceramic Graphite Crucibles/CNBM Ceramic Crucibles For Melt Aluminum
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 0 m.t.
- Supply Capability:
- 100000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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