How did man discover iron? How the ancients discovered iron

The first discovery of iron was a meteorite that fell from the sky, and meteorites have a high percentage of iron (iron meteorites contain iron, which is a mixture of iron, nickel, and cobalt.

China is the earliest country to discover and master ironmaking technology. In 1973, a Shang Dynasty iron-bladed bronze Yue was unearthed in Hebei Province, China, indicating that the working people of China knew iron as early as 3,300 years ago, were familiar with the forging performance of iron, identified the difference between iron and bronze in nature, and cast iron on the blade of copper weapons to strengthen the toughness of copper. Scientific appraisal has proved that the iron blade was forged from meteoric iron.

With the maturity of bronze smelting technology, conditions were gradually created for the development of iron smelting technology. The earliest artificially smelted iron in China appeared during the Spring and Autumn Period and the turn of the Warring States Period. This iron bars and iron pellets unearthed from the Spring and Autumn Tomb in Liuhe County, Jiangsu, and the iron adzes unearthed from the ash pit in the early Warring States period in Luoyang, Henan Province can be determined to be the earliest pig iron tools in China so far.

With the advent of pig iron smelting technology, its role in feudal society is comparable to that of the steam engine in capitalist society. Iron and Human Civilization: From a global perspective, scholars from all over the world are paying attention to academic research topics on the origin, formation and development of ancient civilizations.

The boundary between the Paleolithic and Neolithic periods has long been marked by the appearance of polished stone tools and pottery. Based on the scientific achievements of archaeology in the Middle East, the famous British archaeologist Gordon Child proposed that the emergence of agriculture was an important watershed between the Neolithic and Paleolithic periods. From the entry of human beings into the Neolithic Age to the formation of ancient civilizations, although there are many kinds of academic statements about its era, ways and powers, it is indisputable that the progress of agriculture is the fundamental reason for the development of the Neolithic Age and the formation of ancient civilizations.

As an "agriculture-oriented" ancient China, the origin, formation and development of its civilization are closely linked to the development of agriculture.

It's not too clear, there was already iron-making technology in ancient China. But if you want to know, you can go and see "How Steel is Made".

Copper was first discovered and then iron was discovered, and the first stone fell from the world.

Iron is a trace element needed in the human body. The average person's body contains g of iron, which is equivalent to the weight of a small iron nail, which accounts for about the weight of the human body, but it has a very large effect. 70% of the iron in the human body is found in hemoglobin and myoglobin,25 and is distributed in the liver, kidneys, and bone marrow in the form of ferritin, and a small part of iron is a cofactor for oxidase.

The iron in hemoglobin is a transporter of oxygen in the body. It transports oxygen absorbed by the lungs to tissues throughout the body for cellular oxidation. It transports carbon dioxide produced by cellular oxidation to the lungs and exhales it.

Iron is also a major component of cytochrome enzymes and several other coenzymes. If there is a lack of iron in the body, it can cause anemia, and the ability of muscle cells to use oxygen to produce energy decreases, thus reducing the amount of heat energy**. Adult men need about 10 mg of iron from food per day, 18 mg for boys and 24 mg for girls.

Therefore, it is necessary to pay attention to the intake of iron-containing foods, such as animal liver, kidney, heart, lean meat, egg yolk, seaweed, kelp, black fungus, celery, rape and tomato. Dietary protein and vitamin C increase iron absorption. Therefore, jujubes and oranges, which contain both iron and vitamin C, are good foods for iron deficiency anemia.

Tea contains tannins, which can precipitate iron, which is not conducive to iron absorption. Drinking large amounts of coffee can also hinder iron absorption. People with iron deficiency anemia should drink as little tea and coffee as possible.

Although iron has important functions, it should not be consumed in excess. When the concentration of ferritin in the blood reaches 200 mg L, the incidence of heart disease is three times higher. For every 1 percent increase in blood ferritin levels, the risk of heart attack increases by 4 percent.

This is because excess iron promotes the formation of free radicals, which can damage the cells of the arterie walls and also damage the heart muscle. For this reason, if you do not have iron deficiency anemia, do not deliberately supplement with iron, as long as you eat iron-containing foods regularly.

Iron in the human body is in the form of iron ions, which is an important component of red blood cells, and iron deficiency causes people to suffer from iron deficiency anemia.

Experience: He is an essential inorganic salt for the human body Without him, it will cause iron deficiency anemia and lead to ** pale, dry, dull face, and essential nutrients for hair growth, otherwise it will turn yellow and split ends Especially when she has menstruation in her teenage years, she loses 2 mg of iron per day during the menstrual period, and usually loses mg per day, so you should strengthen the consumption of iron-containing foods, such as animal liver, egg yolks, beans, rape, celery, lettuce, etc. My dad is a doctor, I know. Thank you!

The first discovery of iron was a meteorite under the bridge in the sky, and the meteorite had a high percentage of iron (iron meteorites contain iron, which is a mixture of iron, nickel, and cobalt. Defeated.

It's not too clear, there was already iron-making technology in ancient China. But if you want to know, you can go and see "How Steel is Made".

Iron was discovered later than the metals copper, gold, and mercury, because the three metals all exist in nature in elemental forms, and it is easy to find them, as long as they are cut off the rock. And iron on the surface of the earth has no elemental form, only chemical states such as pyrite, hematite and the like, ancient people have some so-called warlocks, like alchemy, in a coincidental situation they put pyrite and charcoal together to burn, as a result pyrite was reduced by charcoal into metallic iron, this is how it was found.

There is also a situation: although there is no elemental iron on the surface of the earth, but a considerable part of the meteorites are iron, and sometimes the meteorites are not completely burned out when they fall to the earth, and there is still an iron core left on the ground, which provides the ancients with natural metallic iron.

Heavy! The discovery of iron in the space around the Earth is unexpected: space is not really empty!