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The present invention relates to a kind of grinding aid composition and a kind of Enhancement Method that grinds slag, and this method uses described grinding aid to combine with a kind of roll squeezer.Specifically, the present invention relates to roll-in and grinds in the flow process and to use polyacrylic acid or its an alkali metal salt as strengthening a kind of means that the slag material grinds efficient.
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The by product that slag normally obtains from the operation of iron-smelting blast furnace.By convention, blast furnace is equipped with several layers iron ore, the building stones of fluxing, fuel and other iron oxide source, as the integral part of the smelting process of highly controlling.Heat and oxygen are forced to send in the blast furnace, to reach very high temperature and blast furnace bottom opening, to collect the molten iron of fusing.The slag that on molten iron, forms also from stove perforate emit, carry out shrend, to produce wet granular slag charge.
Granulated blast furnace slag is a kind of nonmetal product, mainly is made up of the silicate and the silico-aluminate of calcium and other alkali.ASTM C-989 provides the explanation of operable granular slag in concrete and cement composition, ASHTO-MR02 provides the explanation for example, the ASTMC-595 standard declaration of hydraulicity mix cement that can be formed and be can be used as the levigate product of mix cement component by granular slag.
Can form the mix cement composition, its method is the hydraulic cement combination that replaces the said composition of a part up to about 50 weight with levigate powdery slag product.When slag as the composition of composition and when existing, the cement composition of mortar hydraulic cement, fine aggregate be sand for example, and water and concrete hydraulic cement, fine aggregate, coarse aggregate be stone for example, and water generally demonstrates the enhanced later strength.
The roll squeezer operating mechanism is different significantly with the ball mill operating mechanism.Slag granules is delivered to the roll gap place of a pair of roller.Particle is subjected to particle through between two rollers and the effect of a squeeze that occurs.Two rollers extruding particle makes particle be fragmented into very thin particle, also makes simultaneously to be subjected to depolymerizing agent deagglomerator subsequently and to make the particle that the time spent will dissociate out fully and carry out cracked.
Finished product must be a dry powder, therefore, in the terminal of process, must remove and anhydrate.Use glassware for drinking water that many defectives are arranged, from powdered product, drive away, need lot of energy, reduced the efficient of depolymerizing agent, caused obstruction with the connected particle collector of process for making water.Therefore, need provide a kind of composition, this composition can provide when using the rolling grinding machine and strengthen the means that slag grinds efficient, has reduced the demand to water simultaneously.
The present invention relates to be formed the improvement roll-in method of powdery residue product and related to and can be used in described grinding aid of improving one39s methods by granulated blast furnace slag.Following prove absolutely such, this method need be applied to polyacrylic acid or its an alkali metal salt in the roll squeezer feed, to strengthen feed by the speed of rolling grinding machine and the water-content in the reduction process.
The mill has four grinding rollers and a table diameter of 2.5m, giving it a 25thr slag grinding capacity. Swecem operates a concrete plant in Kungs228ngen. It currently uses ground granulated blast furnace slag GGBFS supplied by Irish-based Ecocems 0.7Mtyr Dunkirk grinding plant in France.
Formed powdery slag product still may contain polyacrylic acid reagent of the present invention.When the composition with routine compared, the required polyacrylic acid of method of the present invention was to the caking characteristics of formed cement composition, and compressive strength or setting time do not have adverse influence.
Evaluate roller pressure by the statics laboratory test, in this test, the slag material is subjected to the effect of a high pressure, and the briquetting product that obtains carries out the short period of time and stirs.It is believed that the briquetting product that begins to form keeps its integrity when stirring ability directly with furnace clinker with to be brought into the roll squeezer roll gap relevant with the ability that intensified operation is provided.
This results in GBFS, granulated blast furnace slag. The granules are similar in size and appearance to beach sand. GBFS is a non-metallic product, which is similar in composition to Portland cement clinker. After granulation, the material is transported to Skyway Cement Companys plant to be ground into Skyway Cement. Grinding.
The grinding plant will be designed to process granulated blast-furnace slag with a target fineness of approximately 4500 cm178g Blaine and blast-furnace cements with different proportions of granulated blast-furnace slag, fly ash and gypsum and different product fineness degree.
Grinding Slag Industry News From Global Slag. The us119m plant will produce both portland slag cement and ground granulated blast furnace slag ggbs it is planned to be finished in the first quarter of 2017 environmental clearance for the project was granted in midjanuary 2016 raw materials for the grinding plant include 074 095mtyr of slag and 150 176mtyr of clinker.
Mar 01, 2000nbsp018332Grinding-related parameters of blast furnace slag cements BFC, such as Bond grindability, specific rate of breakage and breakage distributions were determined employing separate and intergrinding modes. Strength tests were performed on mortar specimens made by BFC prepared by these modes of grinding to the same fineness.
Download Citation Granulated blast furnace slag grinding The characteristics of granulated blast furnace slags are compared with the properties of conventional Portland cement clinker.
May 27, 2013nbsp018332High Alumina Slag and Blast Furnace Operation. Blast furnace BF process of ironmaking is a process where liquid iron hot metal and liquid slag are produced by the reduction of iron bearing materials sinter and or pellet and lump ore with coke and by fluxing of the gangue material of the feed materials.
A modern blast furnace can produce more than a million tons per annum of slag. Slag granulation using water sprays is now an established technology that not only simplifies blast furnace casting floor operations but also provides an economical route for producing of a valuable raw material for a host of industries. The slag granulation plant comprises three sections for granulation, dewatering and storage.
Grinding of cement clinker and granulated blast furnace slag in roller grinding mills is a technology introduced by Loesche. The breakthrough in grinding this type of material on the vertical roller mill did not take place until the beginning of the 1990s.
Blast furnace slag grinding mill in china. Blast Furnace Slag Grinding Mill In China Supply Crusher Steel Slag Crusher Plant. Heavy industry is specialized in the design manufacture and supply of crushing equipment used in mining industry grinding mill china steel slag crusher plant inertia cone crusher is the first choice for fine crushing of steel slag 20 mar 2014 to.
Blast furnace slag cement is the mixture of ordinary Portland cement and fine granulated blast furnace slag obtained as a by product in the manufacture of steel with percent under 70 to that of cement. Ground granulated blast furnace slag cement GGBFS is a fine glassy granules which contain cementatious properties.
GRANULATED BLAST FURNACE SLAG GBFS Slag Supplier. CTC Dubai is the Premier supplier for Steel Slag from various sources throughout the globe. Millions of tonnes of Slag have been moved on various terms FOB, CFR, CNF, CIF from multiple reputable.
A by-product of the manufacturing process when steel and iron are melted down, ground granulated blast furnace slag is most commonly used in cement products. Also known as GGBS or GGBFS, the dry powder is produced by grinding down the product that results from soaking molten-iron slag. Slag.
Blast Furnace Slag Powder Grinding. Application of Ground Granulated Blast Furnace Slag micro powder grinding mill. HGM Series Ground Granulated Blast Furnace Slag grinding machine is the equipment specializing in producing fine and superfine powder of noninflammable, nonexplosive and brittle materials with Moh39s hardness under six, such as calcite, chalk, limestone, dolomite, kaolin
Blast-furnace A furnace used to reduce raw materials into molten iron. Combustion is forced with pressurized air. Air-cooled blast-furnace slag The material resulting from the solidification of molten blast-furnace slag under atmospheric conditions. Subsequent cooling may be accelerated by application of water to the solidified surface. This
The grinding plant will be designed to process granulated blast-furnace slag with a target fineness of approximately 4500 cm g Blaine and blast-furnace cements with different proportions of granulated blast-furnace slag, fly ash and gypsum and different product fineness degree.