Portland cement clinker

Abstract

A portland cement clinker is prepared from lime stone (73-86 wt.%), iron ore tailings (5-18), flyash (2-12), and cinder (1-8) through compounding. Its advantages are low energy consumption and low pollution.

Description

technical field

[0001] The invention relates to a hydraulic Portland cement clinker. Background technique

[0002] Raw meal preparation for the production of traditional Portland cement clinker clinker, the formula generally uses the following raw materials:

[0003] 1. Limestone 77-82% 2. Clay 14-18% 3. Iron ore (or corrected raw material) 4-6%

[0004] Judging from the formula of traditional raw materials, in addition to limestone, 18-24% of clay and iron ore are needed, and clay and iron ore mainly come from cultivated land and iron ore resources. Especially for clay, it takes 230-300 kg of clay to produce 1 ton of clinker. The annual production of cement clinker in my country is about 400-450 million tons. Assuming that 50% of the siliceous corrected raw materials come from clay, then the annual use of cultivated land The volume is 50 to 70 million cubic meters, and the depth of excavation is calculated as 2 meters, destroying 37,500 to 52,500 mu of cultivated land ever...

Examples

Embodiment 1

[0018] Portland cement clinker of the present invention, its raw material is by weight percentage by limestone, iron ore tailings sand, fly ash, boiler bottom slag and fine seed: limestone 74.5% (all is feasible within the scope of 73~86%) ), iron ore tailings 10% (feasible in the range of 5-18%), fly ash 12% (feasible in the range of 2-12%), pot bottom slag 3% (in the range of 1 ~8% range is all feasible), refined seed 0.5% (0~0.5% range is all feasible) is carried out batching, according to conventional cement production technology, it is processed into cement clinker. Wherein the fine seed is a mixture of pure iron fine powder and bauxite, and the weight percent of its pure iron fine powder and bauxite is: 70% of pure iron fine powder (all feasible in the range of 0-100%), aluminum Bauxite 30% (all feasible in the range of 0-100%).

Embodiment 2

[0020] Portland cement clinker of the present invention, its raw material is by weight percentage by limestone, iron ore tailings sand, fly ash, boiler bottom slag and fine seed: limestone 76.5% (all is feasible within the scope of 76~83%) ), iron ore tailings 13% (feasible in the range of 6-16%), 5% of fly ash (feasible in the range of 4-10%), 5% of boiler bottom slag (in the range of 1 ~5% range is all feasible), refined seed 0.5% (0~0.5% range is all feasible) batching, it is processed into cement clinker according to conventional cement production process. Wherein the fine seed is a mixture of pure iron fine powder and bauxite, and the weight percent of its pure iron fine powder and bauxite is: 50% of pure iron fine powder (all feasible in the range of 0 to 100%), aluminum Bauxite 50% (all feasible in the range of 0-100%).

Embodiment 3

[0022] Portland cement clinker of the present invention, its raw material is by weight percentage by limestone, iron ore tailings sand, fly ash, boiler bottom slag and fine seed: limestone 80% (all is feasible within the scope of 79~81%) ), 11% iron ore tailings (feasible in the range of 9-13%), 6% of fly ash (feasible in the range of 6-8%), 2.7% of boiler bottom slag (in the range of 2 ~3% range is all feasible), fine seed 0.3% (0~0.5% range is all feasible) batching, it is processed into cement clinker according to conventional cement production process. Wherein the fine seed is a mixture of pure iron fine powder and bauxite, and the weight percent of its pure iron fine powder and bauxite is: pure iron fine powder 30% (all feasible in the range of 0 to 100%), aluminum Bauxite 70% (all feasible in the range of 0-100%).

[0023] The Portland cement clinker of the present invention can utilize industrial waste slag and waste materials, and after batching, go through raw meal m...

technical field

[0001] The invention relates to a hydraulic Portland cement clinker. Background technique

[0002] Raw meal preparation for the production of traditional Portland cement clinker clinker, the formula generally uses the following raw materials:

[0003] 1. Limestone 77-82% 2. Clay 14-18% 3. Iron ore (or corrected raw material) 4-6%

[0004] Judging from the formula of traditional raw materials, in addition to limestone, 18-24% of clay and iron ore are needed, and clay and iron ore mainly come from cultivated land and iron ore resources. Especially for clay, it takes 230-300 kg of clay to produce 1 ton of clinker. The annual production of cement clinker in my country is about 400-450 million tons. Assuming that 50% of the siliceous corrected raw materials come from clay, then the annual use of cultivated land The volume is 50 to 70 million cubic meters, and the depth of excavation is calculated as 2 meters, destroying 37,500 to 52,500 mu of cultivated land ever...

Examples

Embodiment 1

[0018] Portland cement clinker of the present invention, its raw material is by weight percentage by limestone, iron ore tailings sand, fly ash, boiler bottom slag and fine seed: limestone 74.5% (all is feasible within the scope of 73~86%) ), iron ore tailings 10% (feasible in the range of 5-18%), fly ash 12% (feasible in the range of 2-12%), pot bottom slag 3% (in the range of 1 ~8% range is all feasible), refined seed 0.5% (0~0.5% range is all feasible) is carried out batching, according to conventional cement production technology, it is processed into cement clinker. Wherein the fine seed is a mixture of pure iron fine powder and bauxite, and the weight percent of its pure iron fine powder and bauxite is: 70% of pure iron fine powder (all feasible in the range of 0-100%), aluminum Bauxite 30% (all feasible in the range of 0-100%).

Embodiment 2

[0020] Portland cement clinker of the present invention, its raw material is by weight percentage by limestone, iron ore tailings sand, fly ash, boiler bottom slag and fine seed: limestone 76.5% (all is feasible within the scope of 76~83%) ), iron ore tailings 13% (feasible in the range of 6-16%), 5% of fly ash (feasible in the range of 4-10%), 5% of boiler bottom slag (in the range of 1 ~5% range is all feasible), refined seed 0.5% (0~0.5% range is all feasible) batching, it is processed into cement clinker according to conventional cement production process. Wherein the fine seed is a mixture of pure iron fine powder and bauxite, and the weight percent of its pure iron fine powder and bauxite is: 50% of pure iron fine powder (all feasible in the range of 0 to 100%), aluminum Bauxite 50% (all feasible in the range of 0-100%).

Embodiment 3

[0022] Portland cement clinker of the present invention, its raw material is by weight percentage by limestone, iron ore tailings sand, fly ash, boiler bottom slag and fine seed: limestone 80% (all is feasible within the scope of 79~81%) ), 11% iron ore tailings (feasible in the range of 9-13%), 6% of fly ash (feasible in the range of 6-8%), 2.7% of boiler bottom slag (in the range of 2 ~3% range is all feasible), fine seed 0.3% (0~0.5% range is all feasible) batching, it is processed into cement clinker according to conventional cement production process. Wherein the fine seed is a mixture of pure iron fine powder and bauxite, and the weight percent of its pure iron fine powder and bauxite is: pure iron fine powder 30% (all feasible in the range of 0 to 100%), aluminum Bauxite 70% (all feasible in the range of 0-100%).

[0023] The Portland cement clinker of the present invention can utilize industrial waste slag and waste materials, and after batching, go through raw meal m...