Iron ore is the important raw materials of iron and steel production enterprise, natural ore (iron ore) after crushing, grinding, magnetic separation, flotation, re-election and other procedures gradually selected iron. Iron ore is the elemental contain iron or iron compounds to economic advantage of mineral aggregate, generally less than 50% grade iron ore is smelting use after separation. Natural ore (iron ore) after crushing, grinding, magnetic separation, flotation, re-election and other procedures gradually selected iron. Aiming at the characteristics of China’s iron ore, iron and steel industry to concentrate higher requirements such as dressing workers put forward new challenges to China. So for the development of China’s metallurgical mine ore dressing technology had a deeper requirements, in the ensuing precipitating separation equipment is further improved. Ore dressing process flow should be as efficient, simple, such as pay special attention to the development of energy-saving equipment, as far as possible to the most appropriate process to achieve the best effect, etc. In mill, crushing and grinding operations of equipment investment, production cost, power consumption and steel consumption is often the largest percentage, therefore, the calculation of crushing and grinding equipment selection and operation management is good or bad, to a great extent, decides the economic benefits of the concentrator.

Iron ore analyzer EDX8800M fluorescence spectrometer fast nondestructive determination of iron ore each component content

Easy choice of iron ore resources in China’s iron ore resources are dwindling, iron ore resources characteristic is more lean ore, rich ore less and associated minerals, the mineral composition is more complex, ore disseminated extent is small, mostly to dressing caused some difficulties. Technically, an urgent need to advanced technology, advanced technology and advanced equipment, to promote effective development and utilization of lean ore resources. From economic benefits, concentrator for lean iron ore production, must expand the scale of production, must enlarge the processing capacity of run of mine ore, saving energy and reducing consumption, reduce the cost of ore dressing process will have good economic benefit. Prior to entering in ore grinding operation, get rid of a part of the mix ore gangue mineral primary implement the lost lost earlier, to help improve the ore grade.

The grade of iron ore refers to the mass fraction of iron, iron ore, is iron content in popular. For example, the grade of iron ore is 62, refers to the mass fraction of iron 62%

For hematite (main ingredients for Fe203), the theory of the highest grade of 70%

For magnetite (main ingredients for Fe304), the theory of the highest grade of 72.4%

For siderite (main ingredients for FeCO3), the theory of the highest grade of 48.3%

For limonite (main ingredients for Fe203. H2O), the theory of the highest grade of 62.9%

Iron ore: good and bad elements in the impurity in the iron ore is very much, according to the smelting process and its impact on the quality of products and can be divided into two categories, the beneficial and harmful.

1. Harmful impurities (elements) : impurities that affect the selection and smelting. Common and the most important harmful impurities are: sulfur, phosphorus, arsenic, potassium, sodium, fluorine and so on.

(1) Phosphorus: Phosphorus in the ore generally with apatite (3CaO? P205) state exists, there are also blue iron ore (3FeO? As305) exists in the state. The phosphorus is all reduced in the blast furnace and most of it goes into the pig iron. Steel containing too much phosphorus is easy to crack when processed at low temperatures, which is called “cold brittle”.

(2) Sulfur: Sulfur is mainly present in the ore as pyrite (FeS2), but also as chalcopyrite (FeS? , CuS) or sulfate (CaSO4.2H2O1BaSO4). During smelting, sulfur is partially reduced into pig iron, and the sulfur contained in steel is prone to “hot brittleness” during its hot processing. Although the blast furnace smelting can be desulphurized, but it has to consume more coke (improve the furnace temperature) and limestone (improve the basicity of the slag), and improve the production cost, so the sulfur content of the iron ore into the furnace should be <0.15%.

(3) Potassium, sodium: often exist in aegirine, natroamphibole, marble. Their greatest harm is to reduce the softening point of iron ore, often resulting in blast furnace nodules. The ore with high potassium and sodium content is often easy to affect the anterograde of blast furnace smelting.

(4) Arsenic: Arsenic in general iron ore is very little, but in limonite is more common, it in the form of arsenium (FeAs2S) or other oxides (As203, As305), arsenic in smelting most into the pig iron, when the steel arsenic content of more than 0.1% will make the steel cold brittle cold brittle, and affect the welding performance of steel.

Iron ore analyzer EDX8800M fluorescence spectrometer fast nondestructive determination of iron ore each component content

2, beneficial elements (impurities) : some elements in iron ore do not necessarily bring benefits to the smelting process, but they often can improve some properties of the product, like these elements we call it beneficial elements. Such elements are common: manganese, nickel, chromium, vanadium, titanium and so on.

Iron ore analyzer EDX8800M and fluorescence spectrometer is an advanced non-destructive testing equipment for the rapid and accurate determination of the content of each component of iron ore. The equipment adopts X-ray fluorescence analysis technology, which can realize the rapid detection and analysis of various elements in iron ore samples. The detection result is accurate, stable, the detection speed is fast and the operation is simple. The application of iron ore analyzer EDX8800M provides better and more accurate technical support for ore processing, mineral resources management and other fields. As a high performance vertical high performance X-ray fluorescence (EDXRF) material analyzer, Equipped with a high-power X-ray excitation system coupled with a high count rate and high-resolution FSDD detector, the EDX8800M MAX provides excellent linear dynamic range for higher precision process and quality control in metal cement, minerals, mining, glass and ceramics.

Iron ore analyzer EDX8800M fluorescence spectrometer fast nondestructive determination of iron ore each component content

Iron ore analyzer EDX8800M has equipped with electric refrigeration Peltier FSDD silicon drift detector not only have excellent short-term repeatability and reproducibility for a long time, and have excellent element peak resolution; Can simultaneously elements and oxides composition analysis; Special design of light path and vacuum system has greatly increased the lighter elements (Na, Mg, Al, Si, P) testing sensitivity and accuracy. Can be equipped with nitrogen system at the same time, realize direct liquid and powder samples test; Eight kinds of optical path collimating system, according to different sample size automatically switches, can also test samples of different position and averaging, reduce the error of the sample inhomogeneity caused; Hd built-in camera, clearly display instrument test sample parts. Capable of carrying the sample spin platform, increase the sample detection area, improve the testing accuracy and precision, etc

The following is a spectrometer analysis of iron ore testing report: