🔻Someday, when my ship comes in...
Someday, when I have the money....
Someday, when I have the time....
Someday, when I have the skill....
Someday, when I have the confidence....
یک روزی که کشتی من از راه برسد...
یک روزی که پولش را داشته باشم...
یک روزی که زمانش را داشته باشم...
یک روزی که مهارت و توانایی اش را داشته باشم...
یک روزی که اعتماد به نفسش را داشته باشم...
🔺How many of those statements have you said to yourself? Have I got some sobering news for you: "some day" doesn't exist, never has, and never will. There is no "some day". There's only today.
تا کنون چه تعداد از این جمله ها را به خودتان گفته اید؟ خبر مهمی برایتان دارم: "یک روزی" وجود خارجی ندارد. نه هرگز وجود داشته است و نه هرگز وجود خواهد داشت. هیچ "یک روزی" وجود ندارد. فقط امروز وجود دارد.
🔻When tomorrow comes, it will be another today; so will the next day. They all will. There is never anything but today.
وقتی که فردا از راه برسد، آن هم امروز دیگری خواهد بود؛ روز بعد از آن نیز همین طور. همه آنها این طور خواهند بود. هرگز چیزی جز امروز وجود ندارد.
@mineralprocessing
Someday, when I have the money....
Someday, when I have the time....
Someday, when I have the skill....
Someday, when I have the confidence....
یک روزی که کشتی من از راه برسد...
یک روزی که پولش را داشته باشم...
یک روزی که زمانش را داشته باشم...
یک روزی که مهارت و توانایی اش را داشته باشم...
یک روزی که اعتماد به نفسش را داشته باشم...
🔺How many of those statements have you said to yourself? Have I got some sobering news for you: "some day" doesn't exist, never has, and never will. There is no "some day". There's only today.
تا کنون چه تعداد از این جمله ها را به خودتان گفته اید؟ خبر مهمی برایتان دارم: "یک روزی" وجود خارجی ندارد. نه هرگز وجود داشته است و نه هرگز وجود خواهد داشت. هیچ "یک روزی" وجود ندارد. فقط امروز وجود دارد.
🔻When tomorrow comes, it will be another today; so will the next day. They all will. There is never anything but today.
وقتی که فردا از راه برسد، آن هم امروز دیگری خواهد بود؛ روز بعد از آن نیز همین طور. همه آنها این طور خواهند بود. هرگز چیزی جز امروز وجود ندارد.
@mineralprocessing
Scandium in a Nutshell: Is Scandium the next Industry Changing Metal?
Published on June 21, 2016
1. Scandium: What is it?
Scandium (Sc) is one of the elements that was predicted to exist by Dmitri Mendeleev, the 1860’s inventor of the periodic table of elements, before it was actually discovered in nature. Scandium was discovered by Lars Fredrik Nilson, a Swedish chemistry professor, in 1878 in the minerals euxenite and gadolinite, which had not yet been found anywhere except in Scandinavia.
In nature, it can be found in aluminum phosphate minerals, amphibole-Hornblende, basalt, beryl, biotite, cassiterite, columbite, gabbro, garnet, muscovite, pyroxene, wolframite and rare earth minerals such as bazzite, euxenite, gadolinite, ixiolite, kolbeckite, magbasite, perrierite and thortveitite. The main form of the Sc minerals and percentage of Scandium Oxide is presented in Table 1.
@mineralprocessing
Published on June 21, 2016
1. Scandium: What is it?
Scandium (Sc) is one of the elements that was predicted to exist by Dmitri Mendeleev, the 1860’s inventor of the periodic table of elements, before it was actually discovered in nature. Scandium was discovered by Lars Fredrik Nilson, a Swedish chemistry professor, in 1878 in the minerals euxenite and gadolinite, which had not yet been found anywhere except in Scandinavia.
In nature, it can be found in aluminum phosphate minerals, amphibole-Hornblende, basalt, beryl, biotite, cassiterite, columbite, gabbro, garnet, muscovite, pyroxene, wolframite and rare earth minerals such as bazzite, euxenite, gadolinite, ixiolite, kolbeckite, magbasite, perrierite and thortveitite. The main form of the Sc minerals and percentage of Scandium Oxide is presented in Table 1.
@mineralprocessing
Scandium is a soft, silvery metallic element with atomic number 21. While it is a transition metal (lightest of them), it sometimes is classified as a rare-earth element (REE’s) as it exhibits some rare earth element characteristics. While scandium is not particularly rare on the surface of the earth (31st most abundant and more abundant than lead, mercury and precious metals), it is very rare to find in concentrations over 100 ppm making commercially usable deposits very rare and generally it can be found in more than 100 minerals in trace amounts. Even when it is found at higher grade, processing can be complex, leading to very few stable sources of the metal.
Scandium typically exists in nature as its oxide form, scandium (III) oxide (ScO or scandia) which is the commonly traded form. Scandium was only isolated into its pure form in 1937, and the first full pound of pure scandium metal was produced in 1960.
The lack of any reliable supply of scandium has been the limiting factor in development of its application. However, should a dependable source of scandium become available, end-users would take the opportunity to use the material, and the metal would suddenly be in high demand.
@mineralprocessing
Scandium typically exists in nature as its oxide form, scandium (III) oxide (ScO or scandia) which is the commonly traded form. Scandium was only isolated into its pure form in 1937, and the first full pound of pure scandium metal was produced in 1960.
The lack of any reliable supply of scandium has been the limiting factor in development of its application. However, should a dependable source of scandium become available, end-users would take the opportunity to use the material, and the metal would suddenly be in high demand.
@mineralprocessing
2. Scandium: Usage and Emerging Applications
Scandium is conventionally thought of as a scarce and expensive metal, with only a few niche applications such as military and space station. However most of scandium’s application to date has been driven availability (lack of reliable supply) and high prices. At the more reasonable price, scandium can be more widely adopted in the other application such as transportation and energy industries.
Scandium applications fall into three types of use:
To strengthen alloys of aluminum, either by itself or as an addition to existing multi-metal Al alloys in aerospace, aircraft, automotive, marine and rail industries:
Scandium is the most potent grain-refining agent known for aluminium (Al). Scandium additions of up to 0.5 percent can double or triple the tensile strength of certain aluminum alloys, while retaining the malleability of aluminum.
98% Al : 2% Sc super-alloys have the highest strength-to-weight ratio in use today.
Significantly improves strength, durability, plasticity, thermal conductivity and corrosion resistance.
Retain aluminium weldability without heat cracking and loss in strength (rivet-free aircraft).
Reduces overall weight and build-cost, improving fuel efficiency and aerodynamics.
@mineralprocessing
Scandium is conventionally thought of as a scarce and expensive metal, with only a few niche applications such as military and space station. However most of scandium’s application to date has been driven availability (lack of reliable supply) and high prices. At the more reasonable price, scandium can be more widely adopted in the other application such as transportation and energy industries.
Scandium applications fall into three types of use:
To strengthen alloys of aluminum, either by itself or as an addition to existing multi-metal Al alloys in aerospace, aircraft, automotive, marine and rail industries:
Scandium is the most potent grain-refining agent known for aluminium (Al). Scandium additions of up to 0.5 percent can double or triple the tensile strength of certain aluminum alloys, while retaining the malleability of aluminum.
98% Al : 2% Sc super-alloys have the highest strength-to-weight ratio in use today.
Significantly improves strength, durability, plasticity, thermal conductivity and corrosion resistance.
Retain aluminium weldability without heat cracking and loss in strength (rivet-free aircraft).
Reduces overall weight and build-cost, improving fuel efficiency and aerodynamics.
@mineralprocessing
2. To employ certain outstanding electrical properties and heat resistance abilities in Solid Oxide Fuel Cells (SOFCs). Fuel cells were invented over a century ago and have been used in practically every NASA mission since the 1960’s, but until now, they have not gained widespread adoption because of their inherently high costs.
SOFCs convert a fuel source (typically natural gas CH) and oxygen into electricity, water, CO and heat. SOFCs use a hard ceramic material as a solid electrolyte between an anode and cathode, which when subjected to high temperatures, catalyses the conversion of natural gas to energy. Here is a typical arrangement of the anode, cathode and electrolyte.
@mineralprocessing
SOFCs convert a fuel source (typically natural gas CH) and oxygen into electricity, water, CO and heat. SOFCs use a hard ceramic material as a solid electrolyte between an anode and cathode, which when subjected to high temperatures, catalyses the conversion of natural gas to energy. Here is a typical arrangement of the anode, cathode and electrolyte.
@mineralprocessing