[Chemical composition] The composition is relatively stable, and there are often a small amount of similar substances like Fe 3+ instead of Al, and sometimes a small amount of mixed substances such as Ti, Ca, Mg and alkali. [Crystal structure] orthorhombic system; [Form] The crystal is long column or needle (Figure G-38). There are streaks on the cylinder of the [001] crystal ribbon. The aggregate is radial or fibrous. Sometimes it is hairy and exists as an inclusion in quartz and feldspar crystals. The hairy ceremonial stone is called a thin stone. This needle-like crystal form of the sillimanite is related to the presence of [SiO 4 ] and [AlO 4 ] double chains and [AlO 6 ] octahedral chains in its structure. Figure G-38 sillimanite crystal aggregate [Origin] and occurrence metamorphic minerals, aluminum contact metamorphic rocks of a high temperature zone in output. For example, in the northwest of Beijing Zhoukoudian, the muddy cement of the Permian Hongmiaoling sandstone formed a sillimanite stone after thermal deterioration with the granite . In the regional metamorphism, as an early mineral formation, the sillimanite is also found in the chip rock and gneiss . [Identification characteristics] Rod-shaped, needle-shaped crystal form, produced in contact metamorphic zone and metamorphic rock. [Uses] is the manufacturing of high alumina refractories and acid resistant material, a silica-alumina ceramic alloy technology, the internal combustion engine and the spark plug insulator aircraft, automobiles, ships parts used.
Pavement Hot Melt Road Marking Machine
Latest aptitude program controller from Germany and human-friendly contrarily are adopted in the vibrating marking machine which it possible the prominent marking and prime mark painted at the same time and for just once .It is also equipped with step-less speed changing which makes the movement is carried out at will.It greatly promotes the implementing efficiency and makes the marking accurately fit the shape ,height and space between.It meets the requirement of various road condition and measures up to international norms.The road marks made by it can resist transformation ,abrasion and strikes.
Main scope: Concrete Grinding machines, Floor Polishing Machines, Road Line Marking Machines, Truck Cranes, Road Rollers, excavators, Concrete Leveling Machines, Power Trowels and other Construction machinery .
Jining oking tec co.,ltd, established in 2010, is a professional manufacturer engaged in the research, development, production, sale and service of Concrete Grinding machines, Floor Polishing Machines, Road Line Marking Machines, Truck Cranes, Road Rollers, Excavators, Concrete Leveling Machines, Power Trowels and other Construction machinery .
We are located in Jining city,Shandong province with convenient transportation access. Dedicated to strict quality control and thoughtful customer service, our experienced staff members are always available to discuss your requirements and ensure full customer satisfaction.
In recent years, we have introduced a number of advanced production equipment, and also have an excellent production team and a complete quality assurance system to ensure that each batch of goods is delivered to customers in a timely and high quality.
We also have an excellent management team, experienced technical staffs and professional sales team to solve all problems you encountered before and after sales. In addition, we have obtained I S O 9 0 0 1:2 0 1 5 certificates. Selling well in all cities and provinces around China, our products are also exported to clients in such countries and regions as United States, Europe,Australia, Southeast Asia,Russia,the Middle East,Africa. We also welcome OEM and ODM orders. Whether selecting a current product from our catalog or seeking engineering assistance for your application, you can talk to our customer service center about your sourcing requirements.
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a 0 = 0.743 nm, b 0 = 0.758 nm, c 0 = 0.574 nm; Z = 4. In the crystal structure, there are double-chain [AlSiO 5 ] 3- which are alternately arranged along the c-axis of [SiO4] and [AlO 4 ].
[Physical properties] white, gray or light green, light brown, etc.; glass luster. {010} Cleavage completely, this cleavage plane doubles in a parallel structure. Hardness 6.5 ~ 7.5. The relative density is 3.23 to 3.27. Thermal analysis: heating to 1545 ° C, the sillimanite is converted to mullite and quartz. Mullite is an important ceramic material. Its structure is the same as that of the stellite stone, but there is excess Al→Si entering the tetrahedral double chain. In order to balance the electricity price, some O 2- - absent, ie mullite The chemical formula is: Al 4+2x Si 2-2x O 10-x , and x is the number of O 2- absent.
Spots recommended
A.Express way:edge line of the express way ,diversion line,decelerating line near the toll booth and turns in the road.
B.Edge line of the city road,double amber line,cross road,sharp turn,entrance and exit of ramp,
decelerating line in front of the gates of schools,enterprises and institutions.
C.National,provincial and county roads:continuous declivity slope section,sharp turn preparation section,decelerating line before prevarication road,edge line and single amber line in all sections.
Features of fixing
Compulsory deceleration,reminding by shakes,glistening in rainy days and anti-slippery
1.Compulsory deceleration:remind the driver to slow down in dangerous section such as turn and slopes;
2.Reminding by shakes:Remind and warn the diver who drivers in fatigue or absent-mindedly;
3.Glistening in rainy days:Mark driving safe with clearer visual.
4.Anti-slippery:Magnify the friction with road and slow down the vehicle.
Major functions
When the driver is driving in fatigue or absent –mind-eely,the car shakes when it passes over the prominent lines giving out harsh noise.As a result,the driver comes back to sense promptly and readjusts the direction of the car thus preventing accidents.The prominent lines have better tree-dimensional reflection of light so that the driver can tell the direction and lane in rainy days.The mark lines guarantee the security of driver and provide compulsory deceleration and anti-slip-pery.
Al[AlSiO 5 ] is a homogenous multi-image variant of andalusite and kyanite .
December 15, 2019