Iron ore, it is a kind of rocks and minerals. People can extract iron from the iron ore. The ores are usually rich in iron oxides and vary in color from dark grey, bright yellow, or deep purple to rusty red. Iron ore has many types like magnetite (Fe3O4), hematite (Fe2O3), limonite (mFe2O3), and siderite (FeCo3).
Generally, the iron ore will extract the iron chemical element after crushing, trituration, and magnetic separation. According to the different types iron ore, the price is different. TOP SAMPLER has collected much information about the iron ore price. We found that the iron ore has tumbled since the start of March. Whatever kind of iron ore, the price is fallen sharply, this phenomenon comes into notice among the whole world.
China as the main iron ore export producer, the iron ore price gets more attention from others economists. Davis says, “Elevated levels of Chinese steel mill profitability, a driving force helping to underpin prior gains in iron ore prices since the beginning of the year, especially for mid and higher grades, will likely weaken further in the months ahead, something that he says will create headwinds for steel and iron ore prices.”
On another hand, when people concern about the iron ore price, how to determine the iron ore price is also a crucial issue. How to determine an entire iron ore lot value? How to figure out the iron ore lot characters? How to know this lot quality, lean ore or the rich ore? So testing the quality of the iron ore is a precondition for pricing the iron ore. But there still is an issue. If we test all the entire iron ore lot, it will cost much time and budget. In order to figure out the iron ore quality with less time and money, more and more people pay attention to mechanical sampling method. TOP Sampler as a Chinese manufacturer, we study the iron ore main characters and manufacture the suitable sampling equipment. In article How To Get Representative Ore Sample?, we mainly introduce the ore sampling method. Today, we would like talk about how to make iron ore sample in details.
Iron ore sampling
Iron ore sampling is used for quality control while buyer and seller handover acceptance. People would like to use the iron content percentage as a primary unit to pricing. Generally, we regard 1% iron content as a level. As we know, there are some differences among the different batches of iron ores. Different batches iron ores have different chemical elements and granularity, etc. the iron ore sampling system as an automatic sampling system, it fixes people’s eyes.
For the iron ore sample, the analyst just tests the iron ore sample and will not care about whether the iron ore sample has accuracy and precision or not. Actually, the iron ore sampling procedure has an obvious influence on the analysis result.
Iron ore sampling procedures
Sampling from the bulk iron ores, the suitable sampling method is stratified random sampling method. The sampling procedure has four steps. First, we separate the entire lot from various parts. Second, take certain percent iron ore as an increment. Then, get a divided sample from the increment by dividing. Combine all the divided samples which represent the entire iron ore lot characters.
Bias test
According to the ASTM E877-13 and ISO3082:2017, all the sampling systems should pass the bias test before working. TOP SAMPLER as an iron ore sampling system manufacturer, we have the professional team and advanced technology to manufacture the iron ore sampling system. Of course, all iron ore sampling systems support to do the bias test.
The weight of a sample increment
The weight of a sample increment depends on the iron ore top size. What is the top size mean? Top size of an iron ore refers to the size of sieve hole when 10% iron ore left after the vibrating screen machine procession. There is a formula to calculate the average weight of a sample increment:
M= ql/3.6v
Tips:
M: the average weight of a sample increment;
Q: average flow iron ore in the conveyor belt per hour;
L: the width of a cross belt or the auger sampler;
V: the speed of conveyor belt or the auger sampler;
Iron ore sampling methods
Adopted which kind of sampling methods depend on the material, transportation methods and the sampling purpose. For the iron ore, it belongs to the bulk material. The common sampling method is sampling from the railcar, truck and moving conveyor belt.
In the past, workers will make sample by themselves. They take an increment from the surface of iron ore randomly. But we found that the manual sampling method cannot get the representative sample, people can’t take a sample from the middle of bulk material, and manual sampling method is influenced by the human factor.
As an iron ore sampling system manufacturer with 20 years experiences, TOP SAMPLER provides the iron ore sampling equipment.
Recommended iron ore sampling equipment
Auger sampling system
We have introduced the auger sampling system previously in what is auger sampling system. Auger sampling system is a kind of sampling system for bulk material like iron ore, coal, etc. the auger sampler is the key element. Top sampler auger sampling system is suited for various size briquettes. The auger sampling system is an automatic sampling system which is controlled by the PLC control system. The sampled-railcar or trucks will be positioned automatically after entering the sampling zone. The sampling points are chosen by PLC control system randomly, and the sampling point’s position will be changed with the different trucks or railcars. TOP SAMPLER supplies various auger sampling systems to choose. The crane type can avoid the weather restriction. The door type sampling system is suited for the railcars and is better to construct above the rails.
Cross belt sampling system
For how to choose the cross belt sampling system, we also have listed the pros and bros already. TOP SAMPLER supplies two main sweep samplers: head belt sampler and the central belt sampler. The detailed technical parameters can be customized according to your requirements like the size of the sampler, and the sampling method is rotary sampling or cutting sampling. All the cross belt sampling system can be connected with kinds of conveyor belt feeder, the cross belt sampling system will alarm when it doesn’t work.
The other iron ore sample crushers are available like hammer crusher, roller crusher. What kind of size iron ore you need, TOP SAMPLER can help you get the iron ore sample. For the iron ore, we suggest the jaw sample crusher. It is good at processing the high-rigidity bulk material.
The iron occurs in Fe-mineral ores contains impurities of Phosphorus, sulphur, and high alkali as well as impregnations of waste rock. To produce a concentrate, the iron ore has to be sampled at first. Iron ore price will influence the market and others factors, but the key factor is the iron ore sample quality. Choosing an effective and suitable iron ore sampling system is necessary for each enterprise.
