It turned out that Ms. Zhao had just completed the renovation of her new home and looked at the new house that she had worked hard to buy. She was especially happy in her heart, but she was not happy for a few days. The troubled things came. Chatting with friends who were decorating their new home at the same time learned that their home paint brand was the same as their friends, but the price was several times higher. At first, Ms. Zhao thought it was the same brand, caused by different qualities, but a friend who knew how to decorate told Ms. Zhao that the two households had the same quality and price of paint, which could scare Ms. Zhao, who knew nothing about the decoration. "I had heard that some decoration teams bought high-priced products to make money for the owner and made money. How did you let me meet this time?" Recalling the scene of the renovation, Ms. Zhao could not help but blame herself. Go ahead and decorate the city to understand the paint market. To this end, the reporter made a special trip to visit Linzhou City, decorated with the city, to understand the price of some paint.
On September 4, the reporters respectively visited the plate paint area and learned that the current paint prices range from 200 yuan to 500 yuan per group, and the best color effect is about 5 square meters. Zhou Bo, who runs the paint, told reporters that there are indeed some construction teams who have done the decoration for their homeowners. They have reported that the low-priced products have become high prices or use more materials. "I have been painting for six or seven years. There are too many such things. Some of the construction teams bought 200 yuan of paint from me and went to the main house to report more than 500." Zhou boss told reporters that When the construction team went to the market to buy materials in the first two years, there would be some commissions, but now it is gone. Therefore, only meager wages, purchasing fees, and management fees will not earn any money.
Later, the reporter explained the circumstances of Ms. Zhao’s home to boss Zhou. Zhou boss said after hearing: her family needs to paint and paint less than 15 square meters. It is reasonable to say that 3 sets of paint should be used, but it takes several times. The price may be a result of the construction team reporting the low price of the paint to a high price. Another possibility is to buy a lot of paint. “Many merchants interviewed by reporters later told reporters that the pace of life is fast now. Many people do not have time to carefully manage their own decoration issues. Once they find a decoration team, they will be allowed to fully represent them. As a result, there have been high prices and many reports. Case.
Some paint dealers in China’s Decorative City told reporters that many people do not understand the decoration industry and are busy with work. They do not have time to understand the price of materials in the market and the amount needed for their own decoration. This gives some construction teams opportunistic and Take advantage of opportunities. Therefore, when doing home renovations, it is best to go to the market to understand the market and measure the areas that need to be painted so that you can understand the quantity of materials needed and personally go to the market to choose the right price for the material. Mastering, it can also try to avoid the construction team pitting their own hard-earned money.
Natural Graphite , as its name implies, is naturally formed by natural Graphite , which is generally found in graphite schist, graphite-gneiss, graphite-bearing schist and metamorphic shale.
Features
The chemical composition of graphite is carbon (C). Naturally produced graphite is rarely pure and often contains impurities, including SiO2, Al2O3, MgO, CaO, P2O5, CuO, V2O5, H2O, S, FeO and H, N, CO2, CH4, NH3, etc. Natural graphite minerals are black, steel gray, striated black; Metallic luster, crypto, dull, opaque; The hardness is isotropic, the vertical cleavage surface is 3 ~ 5, the parallel cleavage surface is 1 ~ 2; Qualitative soft, density is 2.09 ~ 2.23 g/cm3, have the feeling of greasy, easy to contaminate finger. Mineral chip under the transmitted light is generally not transparent, extremely thin can pervious to light, the light green gray, refractive index of 1.93 ~ 2.07, under the reflected light is light gray, reflective pleochroism, Ro gray with brown, Re dark blue gray, reflectivity Ro23 (red), Re5.5 (red), the reflected color, double reflection were significantly, strong heterogeneity, polarization color for straw yellow.
Graphite is a complex six-party double cone, assumes the six-party tabular crystal, common simplex are parallel double, six-party double cone, hexagonal prism, but in good condition with rare crystal forms, the generally show scaly or platy, aggregate density lump, earthy or globular.
Type
The process performance and usage of graphite is mainly depends on the degree of crystallization, in accordance with its natural Graphite Crystal morphology can be divided into crystalline graphite, Flake Graphite ) and aphanitic graphite (earthy graphite) two types of industry.
Crystalline graphite
In the crystalline (scale) graphite ore, the diameter of graphite crystals is greater than 1 mu m. Ore grade is low, but optional; The mineral associated with graphite is usually mica, feldspar, quartz, diopathic stone, diabase, garnet and a small amount of pyrite, calcite, etc., some of which have some useful components, such as rutile and vanadium. The ore is scales, grainy scales or granulocyte structures, flaky, flaky, or blocky structures.
Crystalline (scale) graphite is divided into High Purity Graphite, High Carbon Graphite, Medium Carbon Graphite and low Carbon Graphite according to the fixed carbon content.
The high purity graphite (fixed carbon content is greater than or equal to 99.9%) is mainly used for flexible graphite sealing material, nuclear graphite, instead of platinum crucible for chemical reagent melting and lubricant base material, etc.
High carbon graphite (fixed carbon content 94.0% ~ 99.9%) is mainly used for refractory materials, lubricant substrate, brush raw materials, carbon products, battery raw materials, pencil materials, filling materials and coatings, etc.
Carbon graphite (80% ~ 94% fixed carbon content) is mainly used for crucible, refractories, casting materials, foundry coatings, pencil raw materials, battery materials and dyes, etc.
Low carbon graphite (fixed carbon content 50.0% ~ 80.0%) is mainly used for foundry coatings.
Cryptocrystalline graphite
Cryptocrystalline graphite is also called soil graphite or amorphous graphite. In cryptocrystalline graphite ore, graphite crystals are less than 1 mu m in diameter, which are microcrystalline and can only be seen in the electron microscope. High grade of ore, but poor selectable; The mineral associated with graphite is often quartz and calcite; The ore is microscaly - cryptocrystalline structure, block or soil structure.
Cryptocrystalline graphite ore is mainly distributed in contact metamorphic deposits. Actually the diameter graphite flake graphite ore is uneven, the so-called crystalline graphite ore, may also contain the aphanitic graphite, are too many content is often referred to as the mixed type graphite ore, may also contain a small amount of aphanitic graphite quality mineral crystalline flake graphite piece diameter slightly larger than 1 microns.
Cryptocrystalline graphite ore is mainly used in pencil, battery, electrode, graphite emulsion, graphite bearing ingredients and the raw materials of battery carbon rod. The non-ferrous graphite is mainly used for casting materials, refractory materials, dyes and electrode paste.
Natural Graphite
Natural Graphite,Expanded Graphite,Colloidal Graphite,Special Graphite
Fengcheng Ruixing Carbon Products Co., Ltd , http://www.lnfcrxts.com