Graphite Crucible/High Quality CNBM Graphite Crucibles

Graphite Crucible/High Quality CNBM Graphite Crucibles System 1

Graphite Crucible/High Quality CNBM Graphite Crucibles

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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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Specifications

1. SIC graphite crucible
2. high pure and density
3. high strength crucible
4. ISO 9001
5. high heat condduction

Product Description

A crucible is a container used to hold metal for melting in a furnace and it is needed to withstand the extreme temperatures encountered in melting metals. The crucible material must have a much higher melting point than that of the metal being melted and it must have good strength even when white hot.

Graphite crucible can withstand the high temperature, and has good resistance to chemical erosions and thermal shock. Especially graphite crucible is ideal for the melting of aluminum, copper and etc.

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

Usage

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.

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Graphite Crucible/High Quality CNBM Graphite Crucibles

Q: How does carbon impact the availability of clean water resources?: The availability of clean water resources can be significantly influenced by carbon. One way carbon affects water resources is by contributing to climate change. The burning of fossil fuels, mainly responsible for increased carbon emissions, leads to higher global temperatures and disrupts the water cycle. This disruption results in more frequent and severe droughts in certain regions, while others face increased rainfall and flooding. The melting of glaciers and snowpacks, which are essential sources of freshwater for many communities, is also affected by climate change. As carbon emissions warm the planet, glaciers and snowpacks melt at an accelerated rate, reducing the water supply in rivers and streams that rely on these natural storages. This ultimately leads to water scarcity, affecting drinking water availability, agricultural irrigation, and industrial water usage. Moreover, the quality of water resources can be impacted by carbon pollution. Carbon dioxide dissolves in water and reacts with it, causing a decrease in pH levels and increased acidity. This process, known as ocean acidification, is particularly harmful to marine ecosystems and organisms that rely on carbonate ions to build their shells or skeletons. As these organisms struggle to survive, it disrupts the balance of entire aquatic ecosystems, which then affects the availability of clean water resources. Additionally, carbon-based pollutants from human activities, such as industrial processes or agricultural runoff, can contaminate water sources. Pesticides, fertilizers, and hydrocarbons, which are carbon-based chemicals, can infiltrate groundwater or be washed into rivers and lakes, compromising their quality and rendering them unsuitable for drinking or other uses. In conclusion, the impact of carbon on the availability of clean water resources is complex. It affects the quantity of water through changes in the water cycle, reduces water quality through acidification and pollution, and disrupts ecosystems that rely on water resources. Addressing carbon emissions and mitigating climate change is crucial to protect and ensure the availability of clean water for current and future generations.

Q: Benefits of reducing carbon emissions: 1, carbon dioxide in fresh air content of about 0.03%. People living in this space will not be harmed, if the indoor gathered a lot of people, and the air is not circulating. Or indoor gas, liquefied petroleum gas and coal combustion, the oxygen content in the air is relatively reduced, produce large amounts of carbon dioxide, the indoor personnel will appear different degrees of poisoning symptoms. As for the maximum allowable content of carbon dioxide in indoor air, there is no uniform regulation in different countries. Japan has a standard of ventilation when the content of carbon dioxide in the indoor air is 0.15%. The following table shows the effect of CO2 content in air on human body.

Q: What are carbon offsets?: The use of carbon offsets is a method employed to aid in the reduction of greenhouse gas emissions and the fight against climate change. Essentially, it offers a means for individuals, organizations, or businesses to compensate for their own carbon dioxide (CO2) emissions by investing in projects that decrease emissions in other places. Carbon offsets are founded on the concept that emissions reduction can be accomplished through various methods and at different costs. Rather than solely focusing on reducing their own emissions, individuals or entities can utilize carbon offsetting to support projects that can achieve greater emission reductions per unit of cost. These projects encompass renewable energy, energy efficiency, reforestation, methane capture, and others. To obtain carbon offsets, individuals or organizations typically calculate their own carbon footprint by evaluating the amount of CO2 they emit through activities like energy consumption or transportation. After quantifying their emissions, they can purchase carbon offsets equivalent to the amount of CO2 they have emitted. These offsets are generated by projects that undergo independent verification and certification by recognized standards and registries. Once purchased, the carbon offsets are effectively canceled or retired, ensuring that the emission reduction accomplished by the project is not double-counted or claimed by another party. By investing in carbon offsets, individuals or organizations can effectively neutralize their own emissions and contribute to global endeavors to combat climate change. However, it is crucial to recognize that carbon offsets should not be viewed as a substitute for reducing emissions at the source. They should be utilized as a supplementary tool to support emission reduction efforts while simultaneously implementing measures to minimize our own emissions through energy efficiency, adoption of renewable energy, and sustainable practices.

Q: What are greenhouse gases?: Greenhouse gases are gases that trap heat in the Earth's atmosphere, contributing to the greenhouse effect and causing global warming. Some examples of greenhouse gases include carbon dioxide, methane, and nitrous oxide.

Q: What is carbon black pigment?: Carbon black pigment is a finely divided form of carbon that is primarily used as a coloring agent in various applications. It is produced by the incomplete combustion or thermal decomposition of hydrocarbons, such as coal tar, petroleum, or natural gas. The resulting carbon black particles are extremely small and have a high surface area, which gives them unique properties. Carbon black pigment is known for its intense black color, high tinting strength, and excellent UV stability. It is widely used in the production of inks, paints, coatings, plastics, rubber, and various other materials. The pigment particles disperse well in these mediums, providing a deep and uniform black coloration. In addition to its coloring capabilities, carbon black pigment also offers several other desirable properties. It enhances the durability, weather resistance, and electrical conductivity of materials. It can also improve the UV resistance and absorption properties of coatings and plastics, making them more resistant to fading and degradation caused by sunlight exposure. Moreover, carbon black pigment is chemically inert and does not react with other substances. This makes it suitable for use in a wide range of applications without causing any undesired chemical reactions. It is also non-toxic and has a low environmental impact, making it a preferred choice for many industries. Overall, carbon black pigment is a versatile and widely used additive that provides deep black coloration, durability, and enhanced performance to a variety of materials. Its unique properties make it an essential component in numerous industries, contributing to the production of high-quality products.

Q: 14 is the upper left corner of the mark, please answer a bit more detailed, thank you!: Enter 14C, select "14", "point font" or "tool" button "superscript"".

Q: How does carbon affect the formation of ground-level ozone?: The formation of ground-level ozone is not directly influenced by carbon. Instead, it is primarily the outcome of a complex chemical reaction involving nitrogen oxides (NOx), volatile organic compounds (VOCs), sunlight, and heat. Nevertheless, carbon-based compounds, including hydrocarbons, can indirectly impact the formation of ground-level ozone. When carbon-based compounds, such as hydrocarbons, are released into the atmosphere from various sources like vehicles, industrial processes, and the burning of fossil fuels, they can interact with nitrogen oxides in the presence of sunlight, resulting in the creation of ozone. This process takes place alongside volatile organic compounds (VOCs) and nitrogen oxides (NOx), which are the main precursors of ground-level ozone. Increased levels of carbon-based compounds, particularly in the presence of NOx and sunlight, can enhance the formation of ground-level ozone. This is due to the fact that the carbon-based compounds act as catalysts, expediting the chemical reactions that lead to ozone formation. Furthermore, the combustion of carbon-based fuels, such as gasoline and diesel, releases nitrogen oxides into the atmosphere, thereby contributing further to the formation of ground-level ozone. It is crucial to note that carbon-based compounds alone do not directly cause ground-level ozone pollution. Rather, they contribute to its formation when combined with other pollutants like nitrogen oxides and sunlight. To reduce the formation of ground-level ozone, it is necessary to decrease emissions of carbon-based compounds, as well as other ozone precursors like nitrogen oxides and volatile organic compounds.

Q: What are the alternatives to fossil fuels for energy production?: There are several alternatives to fossil fuels for energy production, each with its own unique advantages and challenges. These alternatives include: 1. Renewable Energy Sources: Renewable energy sources, such as solar, wind, hydroelectric, and geothermal energy, harness the power of natural resources that are constantly replenished. Solar energy utilizes the sun's rays to generate electricity through photovoltaic cells, while wind energy converts the kinetic energy of wind into electrical power. Hydroelectric energy is generated by the force of flowing water, typically from dams or rivers, and geothermal energy taps into the heat generated by the Earth's core. These sources offer clean and virtually limitless energy, reduce greenhouse gas emissions, and promote energy independence. However, they may require a significant initial investment and have limitations based on geographic location and weather conditions. 2. Nuclear Energy: Nuclear power plants generate electricity through nuclear fission, which involves splitting atoms of uranium or plutonium to release energy. Nuclear energy is highly efficient and produces no greenhouse gas emissions during operation. It has the potential to provide consistent baseload power and can significantly reduce dependence on fossil fuels. However, it raises concerns about the storage and disposal of nuclear waste, the risk of accidents, and the potential for nuclear weapons proliferation. 3. Bioenergy: Bioenergy involves utilizing organic materials, such as agricultural waste, wood pellets, or dedicated energy crops, to produce heat, electricity, or biofuels. Biomass can be burned directly or converted into a gaseous or liquid form, such as biogas or bioethanol, to replace fossil fuels. Bioenergy has the advantage of being a readily available and carbon-neutral energy source. However, it may compete with food production, require large amounts of land, and raise concerns about deforestation and biodiversity loss if not managed sustainably. 4. Tidal and Wave Energy: Tidal and wave energy technologies harness the power of ocean currents and waves to generate electricity. These sources are predictable and have the potential to provide a consistent and reliable energy supply. However, the technology is still in its early stages, and high upfront costs, environmental impacts, and limited geographic availability can be challenges. 5. Hydrogen Fuel Cells: Hydrogen can be used as a fuel source in fuel cells to generate electricity. Hydrogen fuel cells combine hydrogen with oxygen from the air, producing electricity and water vapor as byproducts. Hydrogen is abundant and can be produced from various sources, including renewable energy. However, challenges include the high cost of production, storage, and distribution infrastructure, as well as the need for advancements in hydrogen storage technology. It is important to note that a combination of these alternative energy sources, along with improvements in energy efficiency and conservation, is likely to provide a more sustainable and resilient energy future, reducing our reliance on fossil fuels and mitigating the impacts of climate change.

Q: How does carbon impact the prevalence of cyclones?: Carbon emissions and the subsequent increase in atmospheric carbon dioxide levels have a significant impact on the prevalence of cyclones. Cyclones, also known as hurricanes or typhoons, are powerful and destructive weather phenomena that form over warm ocean waters. The increased carbon in the atmosphere, primarily due to human activities such as burning fossil fuels, leads to global warming and alters the climate patterns. Warmer ocean temperatures caused by carbon emissions provide the necessary fuel for cyclones to form and intensify. As carbon dioxide traps heat in the atmosphere, it warms the surface of the oceans, creating a favorable environment for cyclone development. The warmer the ocean waters, the more energy is available for cyclones to grow and become more destructive. Additionally, carbon emissions contribute to the changing climate patterns, leading to shifts in atmospheric circulation patterns. These changes can influence the frequency, intensity, and track of cyclones. While it is difficult to attribute individual cyclones to carbon emissions, scientific studies show that the overall increase in carbon dioxide levels is contributing to a greater number of severe cyclones in certain regions. Furthermore, the rising sea levels associated with global warming and carbon emissions can exacerbate the impact of cyclones. Higher sea levels lead to increased storm surge, which is the abnormal rise in water level during a cyclone. This storm surge can cause devastating flooding in coastal areas and result in significant damage to infrastructure and loss of life. In conclusion, carbon emissions have a profound impact on the prevalence of cyclones. The increased atmospheric carbon dioxide levels contribute to warmer ocean temperatures, creating a more favorable environment for cyclone formation and intensification. Changes in climate patterns due to carbon emissions also affect the frequency and track of cyclones. Additionally, rising sea levels associated with global warming can worsen the impact of cyclones through increased storm surge. It is crucial for society to address carbon emissions and work towards sustainable solutions to mitigate the impacts of cyclones and other severe weather events.

Q: How does carbon affect the formation of toxic algal blooms?: Carbon can have both direct and indirect effects on the formation of toxic algal blooms. One direct effect is through the process of eutrophication. Carbon, in the form of organic matter, enters water bodies through runoff from agricultural activities, sewage discharge, and other human activities. This excess carbon acts as a nutrient for algae, promoting their growth and proliferation. When the carbon supply is abundant, algae can reproduce rapidly, leading to the formation of algal blooms. The presence of carbon also affects the composition of algal communities. Some species of algae, known as harmful algal blooms (HABs), have the ability to produce toxins. These toxins can be harmful to aquatic organisms, as well as humans and animals that come into contact with the water. Carbon concentrations can influence the growth and dominance of HABs, creating favorable conditions for their development. Furthermore, carbon affects the chemistry of the water, including its pH levels. Changes in pH can have a significant impact on the physiology and behavior of algae. Some species of toxic algae are more tolerant of low pH levels, which can be exacerbated by increased carbon dioxide levels in the water. This can create an environment that favors the growth of harmful algal blooms. Indirectly, carbon can also alter the temperature and nutrient dynamics in water bodies. Climate change, driven by increased carbon emissions, can lead to warmer temperatures, which can stimulate algal growth. Additionally, changes in nutrient availability due to carbon-induced alterations in the water cycle can favor the development of toxic algal blooms. In summary, carbon affects the formation of toxic algal blooms through eutrophication, changes in algal community composition, alterations in water chemistry, and indirect impacts on temperature and nutrient dynamics. Understanding these relationships is crucial for developing strategies to mitigate the occurrence and impact of harmful algal blooms.

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