Product Description
High Quality 100 tpd Sponge Iron Rotary Kiln Price Calcined Materials Mining Machine
1.What's the DRI?
Direct reduced iron (DRI) is a type of alternative iron made by heating iron ore, mill scale pellet or concentrated iron powder so that the oxygen and carbon burns off while the temperature is kept below iron's melting point. Direct-reduced iron is also known as sponge iron and is sold as briquettes, lumps, or pellets. It is typically used in smaller scale steel mills to enhance the condition of the steel that is manufactured.
During the reduction process in the production of direct reduced iron, either coal or a special gas - commonly containing a combination of carbon monoxide and hydrogen - is used. This mixture functions as a reducing agent and facilitates the decrease in the iron's oxygen and carbon content. The result is a type of iron that is 90-97% pure, containing only minuscule amounts of carbon and other impurities.
In the modern era, direct reduced iron is considered an alternative method of making iron. The process of crafting iron via the direct-reduction route has a distinct advantage over the more traditional, blast furnace mode of production. Not only is the resulting iron more plentiful in total iron content, but it entails a much cheaper production process than the operation of a large blast furnace.
2.The raw material
The raw material to produce DRI is Iron ore, mill scale, or concentrated iron powder which in Fine pellet or Lumps shape.
3.The chemical reactions of DRI production
The chemical reactions involved in the direct reduction of iron are the following:
With H2 (Gas Based)
3Fe2O3 + H2 → 2Fe3O4 + H2O
Fe3O4 + H2 → 3 FeO + H2O
FeO + H2 → Fe + H2O
With CO (Coal Based)
3Fe2O3 + CO →2Fe3O4 + CO
Fe3O4 + CO → 3 FeO + CO2
FeO + CO → Fe + CO2
With Solid Carbon in reaction
CO2 + C → 2CO
4.Direct reduction processes
There are several processes for direct reduction of iron ore:
-- gas-based rotary kiln furnace processes
-- coal based rotary kiln furnaces
Generic illustrations of the types of process are shown in the graphics below.
(1) For your required concentrated iron powder process flow:
Generally speaking, the Fe content of your sample > 65%, firstly, the concentrated iron powder will be made to small pellet by pelletizer (iron powder will be mixed with Coal powder by certain ratio, please note, the coal powder function as reduction agent), and then after making pellet, and after screen, it will be conveyed into the Chain grate, which function is preheating the pellet and making the pellet more strength.
Then after preheating, the pellet will be calcined in the rotary kiln during temperature 950ºC-1100ºC, and the reduction chemical reaction will be occurred, as the above introduction, during this process, the inside of pellet will shape many small hole, which called DRI.
1. One ton raw material (Mill scale or Concentrated iron powder) should be mixed with reduction agent coal 500-600kg;
2. Heating source consumption: Coal: 220kg/t, or Gas: 140m3/t
3. Reduction coal technical require: Volatile (Vad) >30%, Ash(Ad) < 20%, C >50%, S<1%, Moisture <10%-15%, TS+6mr >70%;
4. Lime consumption: about 120kg for desulfidation and dephophorization
5. Electricity: whole plant total power * 0.75/ day (500tpd plant total power 1312KW), s to produce one ton DRI need about 47.23KWH electricity.
6. Final Product: TFe≥92%, MFe≥89%, M≥94% ,S≤0.02% ,P≤0.05%, C≥0.04%
Product Parameters
Factory price DRI rotary kiln plant Main Technical Parameters:
| Model(mm) |
Shell size |
Capacity(t/h) |
Rotating speed(r/min) |
Power(kw) |
Weight(t) |
| Dia.(mm) |
Length(mm) |
Slope(%) |
| 1.4×33 |
1.4 |
33 |
3 |
0.9-1.3 |
0.39-3.96 |
18.5 |
47.5 |
| 1.6×36 |
1.6 |
36 |
4 |
1.2-1.9 |
0.26-2.63 |
22 |
52 |
| 1.8×45 |
1.8 |
45 |
4 |
1.9-2.4 |
0.16-1.62 |
30 |
78.2 |
| 1.9×39 |
1.9 |
39 |
4 |
1.65-3 |
0.29-2.93 |
30 |
77.59 |
| 2.0×40 |
2 |
40 |
3 |
2.5-4 |
0.23-2.26 |
37 |
119.1 |
| 2.2×45 |
2.2 |
45 |
3.5 |
3.4-5.4 |
0.21-2.44 |
45 |
128.3 |
| 2.5×40 |
2.5 |
40 |
3.5 |
9.0-10.5 |
0.44-2.44 |
55 |
149.61 |
| 2.5×50 |
2.5 |
50 |
3 |
6.25-7.4 |
0.62-1.86 |
55 |
187.37 |
| 2.5×54 |
2.5 |
54 |
3.5 |
6.9-8.5 |
0.48-1.4 |
55 |
196.29 |
| 2.7×42 |
2.7 |
42 |
3.5 |
10.0-11.0 |
0.10-1.52 |
55 |
198.5 |
| 2.8×44 |
2.8 |
44 |
3.5 |
12.5-13.5 |
0.437-2.18 |
55 |
201.58 |
| 3.0×45 |
3 |
45 |
3.5 |
12.8-14.5 |
0.5-2.47 |
75 |
210.94 |
| 3.0×48 |
3 |
48 |
3.5 |
25.6-29.3 |
0.6-3.448 |
100 |
237 |
| 3.0×60 |
3 |
60 |
3.5 |
12.3-14.1 |
0.3-2 |
100 |
310 |
| 3.2×50 |
3.2 |
50 |
4 |
40.5-42 |
0.6-3 |
125 |
278 |
characteristics
Characteristics of Rotary Kiln :
1. Rotary kiln is a kind of pyroprocessing device mainly used to sinter cement clinker. Both dry process and wet process are applicable.
2. It is widely used in metallurgy industry, chemical industry, cement industry, building industry, etc.
3. As a professional rotary kiln manufacturer in China, we adopt advanced contact type graphite block sealing device and hydraulic catch wheel device to ensure the stable running of kiln.
4. Through precision measuring and infra-red scanning, the whole sintering process can be monitored.
5. Our rotary kiln has the features of reliable performance, easy operation, low energy consumption, and high productivity, etc.
6. Compared to the output and energy consumption of other equipment of the same specification, the output of our rotary kiln has increased by 6-10% and energy consumption has reduced by 16%.
Working principle
Working Principle of Rotary Kiln :
1. With a certain slope to the level, the whole kiln body is supported by rollers and fitted with thrust rollers to control up and down movement of the kiln body.
2. Besides main driving unit for driving system, it is also fitted with the auxiliary driving unit so as to ensure the kiln body still can rotating when the main motor is powered off and prevent it from deforming.
FAQ
FAQ:
1. What is the raw material do you want to grind?
2. What is the capacity per hour do you need?
3. What is the raw material input size?
4. What is the output size of your product?
1.Are you a manufacturer or a trading company?
A: We are a professional manufacturer of rotary kiln equipment and related machinery
(Rotary kiln, granulator, crusher, grinder, dryer, cooler, feeder, conveyor belt), etc.
2.What should I do if I encounter some trouble while using it?
A: We will provide English manuals and videos to show you how to solve the problem, and if necessary, we will dispatch our engineers to your factory.
3. Do you provide installation services after ordering the machine?
A: For single machines, we provide guidance and operation videos for users.
For the production line, we provide professional construction drawings and arrange engineers to guide users in installing machines. Assist users in training skilled workers.
4.Can we visit your factory and see your equipment?
A: We really warmly welcome every customer to visit our factory, and we can take them to visit the machinery factory
1. We have comprehensive technical and business consulting services;
2. Propose the most suitable solution and equipment for our customers;
3. Free CAD design: If you can provide materials, target capabilities, and factory information, we can provide you with free CAD design.
After sales service:
1. Safe and fast payment methods;
2. Assist clients in equipment foundation construction;
3. Dispatch engineers to install and debug the equipedment;
4. Provide training for frontline operators on site;
5. Regularly visit customers, solve production problems, and provide lifelong service
Our engineers will suggest you the most suitable one for you according to your information.
We will give you factory price with full specification, so pls leave us an inquiry to know more details about price, packaging shipping and discount.
Now, please click the following contact to send us email for best offer and more details !
↓↓↓
Henan Hongke Heavy Machinery Co.,ltd
Tel&Fax:0086-371-68617124
Audited Supplier 
){kind=link}