১| ০৫ ই মার্চ, ২০২৫ দুপুর ১:৫৯

এইচ এন নার্গিস বলেছেন: একটা ইম্পরট্যান্ট জিনিস জানলাম ।

২| ০৫ ই মার্চ, ২০২৫ দুপুর ২:১১

সৈয়দ কুতুব বলেছেন: বাংলাদেশে এমন কিছু কবে পাওয়া যাবে?

৩| ০৫ ই মার্চ, ২০২৫ বিকাল ৩:০৮

কাজী ফাতেমা ছবি বলেছেন: #কুতুব ভাইয়া
বাংলাদেশে পাইলে তা পাচার করার জন্য স্বার্থপররা উঠে পড়ে লাগবে

৪| ০৫ ই মার্চ, ২০২৫ বিকাল ৪:৩৮

আলামিন১০৪ বলেছেন: থরিয়াম ৫০০ গুণ বেশি পেলে আগে এই প্রযুক্তি কোথায় ছিল

৫| ০৫ ই মার্চ, ২০২৫ বিকাল ৪:৫৬

মায়াস্পর্শ বলেছেন: এইডা দিয়া কোনো নেশা-পানি করা যাবে কিনা আমাদের দেশের প্রগতিশীলরা সেই চিন্তায় আছে। উপায় পাইলেই অল্প অল্প করে বিমানের সীটের নিচে করে নিয়ে আসবে।

৬| ০৫ ই মার্চ, ২০২৫ বিকাল ৫:৪৭

ধুলোপরা চিঠি বলেছেন:



এটা যদি আসলে ঘটে, গ্লোবেল ওয়ার্মিংকে থামাতে পারবে।

৭| ০৫ ই মার্চ, ২০২৫ রাত ১১:১৩

হবা পাগলা বলেছেন:

Reserves of thorium resources around the world

৮| ০৫ ই মার্চ, ২০২৫ রাত ১১:১৩

হবা পাগলা বলেছেন:

Reserves of thorium resources in Bangladesh

৯| ০৫ ই মার্চ, ২০২৫ রাত ১১:১৪

হবা পাগলা বলেছেন: Click This Link

১০| ০৫ ই মার্চ, ২০২৫ রাত ১১:২০

হবা পাগলা বলেছেন: Mining and extracting thorium involves several steps. Below is a simplified step-by-step process for mining and extracting thorium, which generally involves extracting it from thorium-bearing minerals like monazite or thorianite.
Step 1: Exploration and Mining

Thorium is not typically mined directly but extracted as a byproduct of mining other materials. The primary ores of thorium include monazite and thorianite.

Exploration:
Geological surveys and exploration are conducted to identify areas rich in thorium-bearing ores.
Monazite and thorianite deposits are usually found in granitic and metamorphic rocks.
These ores are often associated with rare earth elements, so thorium mining is often linked with the extraction of rare earth minerals.

Mining:
Thorium ores like monazite (a phosphate mineral) or thorianite (a thorium oxide mineral) are typically extracted from the earth via open-pit mining or underground mining, depending on the depth of the deposit.
Mining methods are similar to other types of mineral extraction, including drilling, blasting, and hauling the ore to a processing plant.

Step 2: Crushing and Grinding

After mining, the ores are processed:

Crushing:
The mined ore is transported to a mill or processing plant where it is crushed into smaller pieces.
The aim is to reduce the size of the ore to facilitate the extraction of thorium.

Grinding:
After crushing, the ore is ground into a fine powder using mills, such as ball mills, to increase the surface area for the extraction process.

Step 3: Separation of Thorium-bearing Minerals

The next step involves separating the thorium-bearing minerals from the other materials in the ore:

Physical Separation:
The ore may undergo various physical separation techniques, like gravity separation, to concentrate the thorium-containing minerals.
Monazite, for example, can be separated based on its density relative to other minerals present in the ore.

Chemical Separation:
Once the thorium-rich concentrate is obtained, a chemical leaching process is used to further separate thorium from other elements.
The most common methods for chemical separation include using strong acids like hydrochloric acid (HCl) or sulfuric acid (H₂SO₄) to dissolve unwanted minerals and leave the thorium in a purified form.

Step 4: Thorium Extraction

The actual extraction of thorium typically occurs through chemical methods:

Leaching:
In a hydrometallurgical process, the thorium-bearing concentrate is treated with an acid, often sulfuric acid, to dissolve the thorium and separate it from other elements.
The resulting solution contains dissolved thorium and other byproducts.

Solvent Extraction:
The thorium solution undergoes solvent extraction, where an organic solvent is added to extract thorium from the aqueous solution.
Thorium is selectively extracted from other elements in the solution, forming a thorium concentrate.

Precipitation:
Thorium is precipitated from the solution as a compound such as thorium hydroxide (Th(OH)₄) or thorium sulfate (Th(SO₄)₂).
This can be done by adding an appropriate chemical that causes thorium to form an insoluble compound.

Step 5: Purification and Refining

After extraction, the thorium concentrate is further refined to purify it:

Conversion to Thorium Oxide (ThO₂):
Thorium hydroxide or thorium sulfate is heated to high temperatures to produce thorium oxide (ThO₂), a stable and useful form of thorium.
The heating process, known as calcination, converts the thorium compound into thorium oxide.

Refining:
The thorium oxide can be further purified by dissolving it in acids and then re-precipitating it to remove any impurities that might be present.
The resulting thorium oxide is a fine white powder, which is used in various applications, such as nuclear fuel or other industrial uses.

Step 6: Final Product and Disposal of Byproducts

After refining, thorium oxide (ThO₂) can be used in various applications like nuclear energy production or for industrial purposes, such as in the production of high-temperature ceramics or in gas mantles.

Final Product:
The purified thorium oxide is packaged and shipped for use in the desired applications.
Waste and Byproducts:
During the extraction process, waste materials and byproducts are generated, which must be properly disposed of, following environmental regulations to minimize the impact of radioactive materials.
Proper management of radioactive waste, including neutralizing and safely storing any residual radioactive materials, is crucial.

Safety and Environmental Considerations

Thorium is radioactive, so proper safety protocols must be followed during mining, extraction, and refinement processes. This includes:

Protective gear for workers to avoid exposure to radiation.
Proper disposal of radioactive waste to avoid environmental contamination.
Strict regulatory compliance to ensure that the extraction process does not harm the environment or public health.

Conclusion

Mining and extracting thorium involves several complex steps, from exploration and mining to chemical processing and purification. It requires careful management due to the radioactive nature of thorium, as well as compliance with environmental and safety regulations.

১১| ০৫ ই মার্চ, ২০২৫ রাত ১১:২৩

হবা পাগলা বলেছেন: Future Market Potential

If thorium-based reactors gain widespread adoption, especially with technologies like molten salt reactors (MSRs) or other thorium-fueled reactors, the demand for thorium could increase significantly, leading to a more established market and potentially higher prices. However, as of now, the market for thorium remains small and highly specialized.