Russian President says if the European Union imposes an oil embargo, Europe will buy energy at the most expensive price and economic activity in Europe will weaken. Rosneft needs to change its business model. Russia will help facilitate settlement and access to loans and insurance in its own currency.
According to Reuters, the European Commission will unveil a 210 billion euro plan on how Europe can end its dependence on Russian fossil fuels by 2027 and use its distance from Moscow to accelerate a shift to green energy. According to a draft document seen by Reuters, Brussels will propose a three-pronged plan to wean countries off Russian fuel: switch to importing more non-Russian gas, move more quickly to promote renewable energy, and work harder to conserve energy. The draft measures, which include EU law, non-binding plans, and possible recommendations by national governments, are subject to change before publication.
Austria is not a member of NATO and will not seek membership in the future, the Austrian Foreign Minister said in Brussels recently. He stressed that it was "their choice" for Sweden and Finland to seek NATO membership, while Austria would remain neutral.
The supply and prices of many other titanium carbide are expected to continue to be influenced by international situations.
Carbothermal reduction method
TiO2 is reduced by carbon black. The reaction temperature range is 1700-2100℃. The chemical reaction formula is as follows:
TiO2 (s) + 3C (s) = TiC (S) + 2CO (g).
Direct carbonization method
Ti powder reacts with carbon powder to form TiC. The chemical reaction formula is as follows:
Ti (s) + C (s) = TiC
Because it is difficult to prepare submicron metal Ti powder, the application of this method is limited, the above reaction can be completed in 5-20 hours, and the reaction process is difficult to control, and the reactants agglomerate seriously, so it needs further grinding to prepare fine TiC powder. In order to obtain a purer product, the fine powder after ball milling needs to be purified by chemical method.
Chemical vapor deposition
The synthesis is based on the reaction between TiCl4, H2, and C. The reactant reacts with the hot tungsten or carbon monofilament, and the TiC crystal grows directly on the monofilament. The output and sometimes even the quality of the TiC powder synthesized by this method are strictly limited. In addition, due to the strong corrosiveness of TiCl4 and HCl in the product, special caution should be taken in synthesis.
The invention relates to a method for preparing small particle size products by fully mixing and dispersing materials with the help of solution. It has the advantages of good chemical uniformity, small particle size and narrow distribution, low heat treatment temperature, but complex synthesis process and large drying shrinkage.
Using nano-TiO2 and carbon black as raw materials, the material was heated by microwave energy based on the principle of carbothermal reduction reaction. In fact, using the dielectric loss of the material in the high frequency electric field, the microwave energy is converted into thermal energy, and the nano-TiO2 and carbon are synthesized into TiC.
Explosive impact method
Titanium dioxide powder and carbon powder were mixed in a certain proportion, and the precursor was prepared by pressing into a Φ 10mm × 5mm cylinder with a density of 1.5g/cm3, which was packed into a metal confined outer cylinder in the laboratory. The experiment was carried out in a self-made airtight explosion container, and the detonation ash was collected after the action of explosion shock wave. After preliminary screening, large impurities such as iron shavings are removed to get black powder. The black powder turned brown after being soaked in aqua regia for 24 hours, and finally put into muffle furnace and calcined 400min at 400℃ to get silver gray powder.
High frequency induction carbothermal reduction method
The pigment grade titanium dioxide powder and charcoal powder were weighed and mixed at 1:3 and 1:4, then added to the ball milling tank and milled for 6 hours on a planetary ball mill at a rotational speed of 300~400r/min, then the ball milling material was pressed into a 2cm × 2cm~2cm × 4cm block on a pressing machine, and finally the material was loaded into a graphite crucible and put into a high frequency induction heating equipment. Argon gas was used to protect the atmosphere. Gradually adjust the current of the high-frequency induction equipment to 500A to make the material have carbothermal reduction reaction and keep 20min. After the heat preservation, the reduction product is naturally cooled to room temperature in argon atmosphere, and the reduction product is taken out. After grinding and crushing, the ultra-fine titanium carbide powder is obtained.
Metal thermal reduction method
The solid-liquid reaction method is an exothermic reaction, so the reaction temperature is low, the energy consumption is low, but the raw material is more expensive, and the CaO and MgO in the product are pickled and can not be recycled.
High temperature self-propagating synthesis
The SHS method is derived from exothermic reaction. When heated to a proper temperature, the fine Ti powder has very high reaction activity, so once ignited, the combustion wave generated through the reactants Ti and C will have enough heat of reaction to form the TiC, SHS method, usually less than a second. The synthesis method requires high purity and fine Ti powder as raw material, and the output is limited.
Reaction ball milling technique
Reactive ball milling is a technology to prepare the required materials by using the chemical reaction between metal or alloy powder and other elements or compounds in the process of ball milling. The main equipment for preparing nanomaterials by reactive ball milling technology is high energy ball mill, which is mainly used to produce nanocrystalline materials. The mechanism of reactive ball milling can be divided into two types: one is mechanically induced self-propagating high temperature synthesis (SHS) reaction, and the other is reactive ball milling without obvious exothermic reaction, and the reaction process is slow.
Titanium carbide Price
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Inflationary pressures on Canadians continue to rise. The consumer-price index rose 6.7% in March from a year earlier, the biggest increase since January 1991, according to the latest figures from Statistics Canada.
On a month-on-month basis, Canada's CPI rose 1.4 percent in March, also accelerating from February's 1.0 percent rise.
Prices in the eight major sectors covered by the statistics continued to rise. The uptrend comes against the backdrop of continued price pressures in the Canadian housing market, widespread supply chain constraints, and geopolitical conflicts, according to CBC. A variety of factors have affected energy, commodity, and agricultural markets. Meanwhile, Canada's employment picture continued to improve in March, with the unemployment rate falling to a record low and the average hourly earnings of employees rising.
Excluding gasoline, Canada's CPI rose 5.5 percent year on year in March. It is also the highest since comparable data began in 1999.
The widespread supply chain constraints and geopolitical conflicts are expected to continue to affect the prices of the titanium carbide.
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