Researchers at the University of Mississippi use a 300-mm Sprout-Bauer refiner. In the intermediate laboratory, two types of raw materials, i.e., ramie bast fibers and bast fibers containing 22% wood cores, are chopped and then soaked in 35°C water. Dip for 4 h, then pass through several refiners in a refiner until the pulp freeness is 125-150 ml CSF. The first-stage refining concentration was (35±1)%, and then the pulp consistency of the two raw materials was 15% and 22%, respectively; the control factors in the refining process were pulp consistency, the number of multistage refining passes, and the refining interval. For controlling the ratio of fibers to fine fractions, the number of disc space and refining passes is a very important parameter. Alkali-hydrogen peroxide bleached RMP of two raw materials, good bleaching performance, hydrogen peroxide dosage 3%, NaOH 1% to 3%, DTPA1%, sodium silicate 5% and magnesium sulfate 0.5%, pulp concentration 12% , The temperature of 60 °C to maintain 2h, whiteness of bleached pulp up to 75% ISO. The physical mechanical strength and optical properties of handsheets made from two raw materials, ramie bast fibers RMP, were determined. The results showed that the ramie bast fibers and the RMP of the kenaf bast fiber containing 22% of the wood core not only Suitable for the production of newsprint, but also for copying higher grade paper, such as low-quantitative coated paper, to reduce the amount of softwood bleached kraft pulp.
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Hematite meaning and properties
Hematite is used to improve relationships. If you need your personal relationship to be better, carry a hematite with you always.
The name comes from the Greek word for blood. It has been used as an amulet against bleeding, and so is known as the "blood stone". When arranged like the petals of a flower, it is referred to as the "iron rose". Native American folklore states that war paint made from hematite will make one invincible in battle. People in the eighteenth and nineteenth centuries wore Hematite Jewelry during mourning.
Scientists of the Mars Exploration Rover Project believe that deposits of hematite ono Mars .may help prove whether large amounts of liquid water ever flowed on Mars' surface. They say that where water was, life may have had a chance to thrive as well.
Hematite is good for increasing intuition. In jewelry it is best in a ring worn on the left hand.
Healing properties of Hematite
Hematite stimulates iron absorption in the small intestine, which in turn improves oxygen supply to the body. It can be in direct contact with the skin, but results in inflammation for some people, so test it carefully on yourself before use.
Sources of Hematite
Brazil is the most important source of hematite. Other sources include: China, Canada, England, and Germany.
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January 25, 2019