China's jewelry industry, the technology of the Garnet sand"purple tooth wu". "Tooth uri (gu)," derived from Arabic Yakut (gem), and because of garnet is purple red, so named purple teeth.
For thousands of years, garnet is regarded as a symbol of faith, firmness and simplicity. People want to own, and worship it, not only is because of its aesthetic value, more importantly, people believed that gem has a magical magic power, make the person not jeopardized, killed ChengXiang, can keep honor status forever, and has important function of memorial.
Today, January birthstone, garnet, as a symbol of the faithful, love and virtue.
Garnet is a mineral, garnet crystal with pomegranate seeds shapes, colors are very similar, hence the name "garnet." Good color, transparent garnet gemstones can become. Common garnet red, but the color category is broad enough to cover the entire spectrum of colors.
2013年11月7日星期四
2013年11月6日星期三
Brown fused alumina major functions
Brown fused alumina with high temperature resistance, corrosion resistance, high strength, such as performance, so use casting steel slide gate, and special alloy smelting rare metals, ceramics, blast furnace lining; Physical and chemical vessels, spark plugs, heat-resistant oxidation coating; Corundum heat preservation material, which are widely used in all kinds of high temperature furnaces furnace wall and furnace top, high temperature resistant and heat preservation.
Brown Corundums sand particle size is by the artificial corundum block, using the equipment such as roller, ball mill, the mark, it is mainly used for polishing, grinding, grinding industry, etc., can also according to customer requirements for water washing, acid pickling treatment methods such as processing, able to meet the different needs of customers.
2013年11月5日星期二
Garnet bracelet physiological efficacy is what?
1, Garnet sand, help to improve the human blood troubles, can promote the blood circulation, enhance vitality, which can play a beauty to raise colour effect, so it can say garnet is the first choice for ms act the role ofing is tasted.
2, garnet, helps to recover quickly, strengthen the vitality and vigor, for a man who often stay up late, overtime, restores the physical strength can make it active.
3, garnetcan strengthen the wearer's vitality and charm and affinity, garnet wheel at the bottom of the corresponding to the human body, help to improve the reproductive system function, enhance sexual performance. Can strengthen their own cells regeneration ability, and the ability to turn the healing of the wound to get fast. For women, garnet can effectively improve the troubles of department of gynaecology, improve the inner loop.
4, garnet on hormone secretion and blood circulation have certain stimulative effect, good reproductive system and the health of the relevant organ, can put a garnet in the lower spine on the back of the coccyx, can feel the vibration slowly, can purify the spleen, for arthritis are said to be effective, but if allergic or practice was not prepared for the best to avoid doing so, in order to avoid damage. Garnet is said to have also prevent snake bites and food poisoning.
The role of garnet!
Garnetrole 1) helps to improve blood troubles, promoting circulation, enhance vitality, which can take to the effect of hairdressing to raise colour, is the first choice for ladies to love.
(2). Help to improve the function of the reproductive system, and strengthen the regeneration of the body, can accelerate wound healing.
(3). To often stay up late, overtime and fatigue workers, day and night to recover. Wish I could help you!
2013年11月4日星期一
Purifying quartz sand - chemical method
Quartz purification chemical method is mainly acid leaching
method and the complex legal, acid leaching method is to use quartz
insoluble in acid (except for HF) and other impurities minerals can be
the characteristics of the acid dissolution, which can realize further
purification of quartz. Ways is to use quartz powder after pickling,
acid and can form a coordination compound and the impurity ions in
solution, further to remove the impurity ions in solution.Acid
leaching method is divided into single acid leaching method and mixed
acid leaching method. Acid leaching is often? With acid with sulfuric
acid, Aluminium hydroxideacid,
nitric acid and hydrofluoric acid. Complexation
is often with acids mainly oxalic acid and acetic acid (more)Crusher
andKunming crusher technical details please visit kunming kunming andKun
ding ChongJi beneficiation plant network). The acids of metal impurity
in quartz mineral has a better removal effect. Various dilute acid on Pe
and A1 removal effect is obvious, and the removal is the main use of Ti
and Cr relatively concentrated sulfuric acid, hydrofluoric acid and
aqua regia. The main factors influencing the effect of acid treatment is
acid concentration, temperature, time and washing process, etc. 2.1
single acid leaching method to put a certain amount of quartz sand in a
certain concentration of acid solution, heated to a certain temperature,
heating time appropriately, the acid solution recycling, quartz sand
after washing and drying. Somewhere in sichuan containing silty clayey
diatomite l 'oJ, using sulfuric acid as acid infusion, by means of
temperature, concentration of sulfuric acid and the study of
liquid-solid ratio, it is concluded that when the temperature is 90 ℃,
sulfuric acid concentration was 40%, the liquid-solid ratio of 10:1, the
leaching rate of diatomite railway, best Fe20, decreased from 3% to 3%
to 3%, and the content of A1203 content also decreased from 9.55% to
9.55%, and the diatomite in the SiO: content rise to more than 80%. Zhou
Yongheng on acid leaching of quartz purification experiment study,
through to the hydrofluoric acid pickling temperature, concentration,
time of the study, the results show that when the raw material for vein
quartz powder in the temperature of 120 ℃, HF, and the proportion of
water in a solution of 0.4-0.5 0.5 6 h acid leaching, the purity can be
reached the standard of high-grade quartz glass. 2.2 mixed acid leaching
methodBecause each kind of effect of removal of impurities of
quartz sand is different, different acid mixed together, produce
synergies, impurity removal rate higher in the quartz sand, can obtain
higher purity quartz sand. Will be washed after quartz sand to join the
acid mixture, at room temperature, agitation leaching, clearance
generally time for 24 h, if under the condition of heating, using
agitation leaching, time is usually 2-6 h, washing dry can. Zhang Chang
use at room temperature, such as 18% hydrochloric acid and silicon
powder 1.5:1 the liquid-solid ratio, then with 25% sulfuric acid,
sulfuric acid and silicon powder liquid-solid ratio of 2:1 in second
acid leaching, acid leaching time were used in the 12 h, after two times
of acid leaching purification treatment of micro silicon powder fe
content < 60 ug/g. Washing of the quartz sand by 20% - 80% of the
solid mass fraction with the slurry release containers of mechanical
agitator, then add in hydrochloric acid solution (1% 10%) and
fluorosilicic acid solution (1% 10%), quartz sand and solution in 75-100
'C temperature mixing 2 to 3 h, and then remove the slurry solution,
washing with water several times, until cleaning solution pH value is
close to neutral. Use this method to deal with, can reduce the iron
content of quartz sand from 0.0059% to 0.0059% - 0.005%. Shen Jiu
proportion of mixed acid used for sulfuric acid, hydrochloric acid,
nitric acid, hydrofluoric acid 50% : 25% : 15% : 10%, heated to 80 ℃,
the concentration of the leaching pulp is 50% - 55%, the content of the
silica and iron impurity content reached the standard of high purity
quartz sand (SiO2 99.98% or higher, Fe2O3 0.001% or less). 2.3 complex
legal ways is a kind of medium strength of organic acids, react with
impurities on the surface of the quartz silica sand, and also with the reaction
of impurity ions to form stable coordination compounds, and reduces the
concentration of impurity ions on the surface of the particles, as well
as prevent ion precipitation in the process of washing, further reduce
the impurity content in the quartz sand. Panias etc., 120, the average
particle size of 20 LTM iron content is 110 x10 ° of quartz sand, said
take a certain amount in oxalic acid solution, under heated to 80 ℃, the
processing time is 3 h, can dissolve including iron ore, in acidic
solution can only exist in the form of Fe3 ', Fe3 + again with oxalic
acid to form stable chelate, the iron removal rate between 80% and 100%,
after processing, iron content in the quartz sand below 10 x10 ~. -
Hunan province LiuYangShi quartz sand, after dealing with the oxalic
acid, the sample of SiO2 content increased from 98.26% to 98.26%, A1203
decreased from 0.18% to 0.18%, and the content of Fe203 content reduced
to 0.10%. Acid used in the above are available evaporation,
condensation, or other methods to achieve the purpose of regeneration
and reuse. When Si02 require high purity, acid cleaning of water must be
distilled water or deionized water, avoid tap water contains impurities
such as iron cause pollution to the high purity Si02.
Purifying quartz sand - physical method
Physical purification quartz Silica sandis washed and classification desliming, scrub, magnetic separation, flotation and ultrasonic method.
1.1 washing and classification desliming this approach is mainly aimed at containing a large amount of clay minerals quartz sand. Because as quartz sand particles and the grade of the SiO2 decreases, and the grade of iron and Aluminium hydroxideimpurities such as mineral increase, so the rounding out the top of water concentration and classification of quartz sand ore desliming is very necessary, and the effect is also evident in the 18 j. It only as a method of the pretreatment of the ore candidate before application earlier are also common, but for the exist in the thin film on the surface of the quartz sand iron and adhesion impurity minerals, its removal effect is not significant. Scrubbing is 1.2 with the help of a mechanical force and sand grain peel force to remove the film on the surface of the quartz silica sandgrinding impurity iron, bonding and clay mineral and further chopped into single mineral aggregate, then through classification work to achieve the effect of quartz sand further purification. At present, the main two methods have good friction and mechanical scrubbing washing. For mechanical scrubbing, the related mechanical equipment structure, configuration and process flow of scrubbing washing time and concentration are the main factors influencing the scrubbing effect. Due to the factors that affect it too much, make the mechanical scrubbing the recovery rate is very low, only about 40%, so the mechanical scrubbing effect is not ideal. Compared with the mechanical scrubbing, great friction wash effect is much better than it. In great friction washing process, add the appropriate reagents, increase of impurity mineral and quartz particles on the surface of the electric repulsion, enhance impurity minerals and quartz particles mutual separation effect, increase the recovery rate of scrubbing to 80%, great friction wash is almost twice the mechanical scrubbing, but for the purification of high purity quartz sand, it is just a way of ore pretreatment. 1.3 magnetic separation magnetic separation method can remove the quartz sand particles maximum contains some impurities, hematite, limonite and biotite of weak magnetic impurities such as minerals and strong magnetic minerals mainly magnetite. Mineral often choose for weak magnetic impurities in strong magnetic machine more than 100000 e, for strong magnetic mineral impurities often adopt magnetic machine in the weak magnetic machine or magnetic separation. In general, the number of magnetic separation and magnetic field strength has important influence on magnetic separation effect of iron, with the increase of the number of magnetic separation, the iron content gradually reduce; And under a certain magnetic field strength can remove most of the iron, the magnetic field intensity even improve a lot since, in addition to iron rate also do not have changed much. In addition, quartz sand particle size is fine, in addition to iron, the better the results, the reason is that fine particle high mineral content of iron impurities of quartz sand. Tian Jinxing in experimental research progress of the study on the purification technology of high purity quartz sand, the results show that along with the increase of magnetic field intensity, impurity removal rate rise, magnetic field intensity of 100000 e, impurity removal rate increase is not obvious. Therefore appropriate magnetic field strength should be 100000 e. After magnetic separation, 40 mesh Si02 grade can reach 99.05%, with 0.071% Fe203:40-80 mesh Si02 grade is 99.09%, 0.070% Fe203 content; 80-140 mesh Si02 grade is 99.14%, 0.067% Fe203 content: 140-200 mesh Si02 grade is 99.10%, 0.069% Fe203 content. But are too many impurities in the quartz sand, especially containing more weak magnetic or nonmagnetic impurity, with magnetic separation is not only purified into high purity quartz sand. 1.4 flotation
Flotation is to remove the quartz sand in feldspar, mica and other non-magnetic minerals associated impurities. At present there are mainly with fluorine flotation and two methods of fluorine-free flotation. Fluorine flotation is using cationic collector and hydrofluoric acid as activator in the acidic pH range. But given the fluoride waste water serious impact on the environment, people are turning to non-fresno flotation. Use of quartz, feldspar differences in structure, reasonable ratio of ion of Yin and Yang of mixed collector with depth and dosage, using their Zeta potential of different, preferential flotation of feldspar, realize the separation of the two llo,. Have been reported in the neutral condition, join non-fresno flotation reagents, the silica micro powder Si02 content increased from 99.1% to 99.1%, accordingly Fe203 content decreased from 0.081% to 0.081%, a 85% yield at 83%. This indicates that no flotation can significantly improve quality of silica micro powder. Shang Yafei, sodium hexametaphosphate as dispersant and flotation agent, twelve amine collector, can remove the iron impurities from quartz fine powder, Fe2O3 content from 0.09% to 0.02%, the yield reached 85%. 1.5 the ultrasonic method, ultrasonic method is a kind of sound waves, depending on the media to spread it is mechanical energy, in the heart of the communication process will cause interaction with the media, to produce a variety of effects (mechanical effect, thermal effect and the cavitation effect). Using ultrasonic grinding head on the liquid, the liquid internal changes, pressure or tension, when the tension reaches a certain intensity, produce cavitation effect, causing the tiny bubbles, the bubbles with ultrasonic vibration is compressed stress decreased; When the bubble reaches a critical scale (the scale determines the frequency of the ultrasonic wave), the bubble will burst, produce a great pressure, engaged in fierce impact of solid particles in liquid, under the intense impact, trace impurity or water film on the surface of the particles, quickly from the particle surface spalling, suspended solids under the action of dispersant, become a subtle, from quartz sand, after washing the separation, to make the purity of quartz sand is greatly improved. Liao Qing in water and a small amount of dispersant media such as medium, the 0-15 mm depositional quartz sandstone particles, powder by ultrasonic treatment, including Fe2030.12 %, quartz sand to contain Fe2030 S10299.42 %. 01%, 8 i0299. 8%, recovery rate over 99%, reached the standard of optical glass with sand.
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