Method for producing cement clinker and oxide pellets

A technology of cement clinker and oxidized pellets, which is applied in the field of metallurgy, can solve the problems of low grinding index, many harmful elements, and difficulty in blast furnace smelting, and achieve the effects of saving electric energy, good metallurgical performance, and improving production efficiency
CN106636627AActive Publication Date: 2017-05-10JIANGSU PROVINCE METALLURGICAL DESIGN INST
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
JIANGSU PROVINCE METALLURGICAL DESIGN INST
Publication Date
2017-05-10

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Abstract

The invention discloses a method for producing cement clinker and oxide pellets. The method comprises the following steps: (1) respectively crushing and grinding iron ores, iron-bearing minerals, limestone and adhesive, uniformly mixing according to a proportion to obtain an inner core raw material, mixing pulverized fuel ash and limestone according to a proportion, adding adhesive, and uniformly mixing to obtain an outer layer raw material of pellets; (2) pelletizing the inner core raw material to obtain pellet inner cores; (3) pelletizing by using the pellet inner core as female parent pellets and the outer layer raw material of pellets as a raw material to obtain compound pellets; (4) drying the compound pellets; (5) roasting the dried compound pellets in the air to obtain roasted pellets; (6) cooling the roasted pellets out of a furnace to pulverize the outer layer of the roasted pellets, namely pulverizing the outer layer to obtain cement clinker, and obtaining inner pellets as oxidized pellets; and (7) collecting the roasted cement clinker and oxidized pellet ore. The method can be used for simultaneously producing cement clinker and oxidized pellet ore, so that the production efficiency is improved, and energy conservation and emission reduction can be achieved.
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Description

Technical field

[0001] The invention belongs to the field of metallurgy, and specifically relates to a method for producing cement clinker and oxidized pellets. Background technique

[0002] With the development of my country's economy and industry, the construction industry continues to rise, as the scale of national infrastructure continues to increase, the amount of cement required continues to rise, and the technology for efficient production of cement raw materials is also valued by the construction industry. However, the cement industry has problems such as backward technology, high energy consumption and low efficiency, and serious environmental costs. Therefore, the innovation and application of cement production technology is imminent. At the same time, when the cement is fired in a single block type, the interior cannot be burnt through in a short time.

[0003] On the other hand, in my country, high-speed iron ore resources are relatively poor, the grade is also relativ...

Claims

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