Method for preparing kaoline products for catalytic cracking catalyst

A catalytic cracking and kaolin technology, applied in catalytic cracking, chemical instruments and methods, cracking, etc., can solve the problems of ineffective control of the proportion of crystal components, and achieve the effects of improving performance, avoiding pollution, and ensuring uniform distribution

Active Publication Date: 2009-03-25
中国高岭土有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology allows creation of high-quality ceramic material by controllably adjusting its properties through specific processes that are applied during manufacturing. It achieves this by producing fine grained particles called talcum powder or hollow glass microspheres from clay mineral rocks containing calcium carbonates. These tiny spherules help make it stronger than traditional fillers like sandstone while still maintaining their appearance when mixed into water before use. Additionally, these small silicate shells prevent damage caused by excessive moisture exposures during storage. Overall, this new type of ceramics made up entirely of solid elements provides improved strength without adding extra weight but improves durability over existing methods.

Problems solved by technology

Technological Problem addressed in this patents relates to improving the efficiency of producing ceramic materials from hydrocracked fractured crude oils through in-site crystaling processes involving kneading, milling, grinding, heat treatment, cooling, acidification, separation, and sintering steps. Current methods involve crushing and classification of starting ingredients before combining them together, which can be time-consuming and expensive.

Method used

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  • Method for preparing kaoline products for catalytic cracking catalyst
  • Method for preparing kaoline products for catalytic cracking catalyst
  • Method for preparing kaoline products for catalytic cracking catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment one: a kind of preparation method of catalytic cracking catalyst kaolin product is made up of following steps successively:

[0045] (1) pulping

[0046] The raw kaolin ore containing 35% kaolinite by mass, water and dispersant are pounded to make the first slurry with a pH value of 7.2.

[0047] The raw kaolin ore containing halloysite with a mass of 45%, water and a dispersant are pounded to make a second slurry with a pH value of 7.4. The pH values ​​of the first slurry and the second slurry may be the same or different.

[0048] Wherein, the mass ratio of above-mentioned two kinds of kaolin raw ores and water is 1:1, and the mass ratio of above-mentioned two kinds of kaolin raw ores and dispersant is 1:0.0014, and described dispersant is the mixture of water glass and sodium hexametaphosphate, The mass ratio of water glass and sodium hexametaphosphate is 3.5:1;

[0049] (2) Grading

[0050] The first slurry is classified, and the obtained first overfl...

Embodiment 2

[0060] Embodiment two: a kind of preparation method of catalytic cracking catalyst kaolin product, the kaolin that will be taken from Suzhou Yangdong Mine joins in the slurry tank, adds water, dispersant (the ratio of water glass and sodium hexametaphosphate is 2.5: 1) After being separated by five-stage hydrocyclones (Φ200, Φ150, Φ75, Φ25, Φ10), kaolin slurry A is obtained; kaolin obtained from Suzhou Yangxi Mine is also processed to obtain kaolin slurry B. Sampling and analysis showed that the contents of halloysite in slurry A and slurry B were 46% and 72%, respectively.

[0061] Mix slurry A and slurry B according to the ratio of 0.35:1 (dry weight), press filter to dehydrate and dry to obtain product A. Sampling and analysis showed that the halloysite content of the final product was 65.35%. attached figure 1 The SEM photos show that the number of flakes and tubes in the product is approximately equal. The XRD pattern of accompanying drawing 2 shows that the product ha...

Embodiment 3

[0063] Put the rough concentrate of kaolin from Maoming into the slurry tank, add water and dispersant (the ratio of water glass to sodium hexametaphosphate is 2.5:1), and pass through the two-stage hydrocyclone (Φ150, Φ75), A horizontal centrifugal classifier was used for further classification, and the slurry was bleached with sodium hydrosulfite (sodium hyposulfite) to obtain kaolin slurry C. The kaolin treatment steps of Suzhou Yangxi Mine are the same as above to obtain kaolin slurry D. Sampling and analysis showed that the contents of halloysite in slurry C and slurry D were 10% and 73%, respectively.

[0064] Mix slurry C and slurry D at a ratio of 0.12:1, press filter for dehydration, and dry to obtain product B. Sampling and analysis showed that the halloysite content of the final product was 65.26%. attached image 3 The SEM photos show that the number of flakes and tubes in the product is approximately equal. The XRD pattern of accompanying drawing 4 shows that ...

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Abstract

The invention discloses a preparation method of a kaolin product used for a catalytic cracking catalyst, which comprises the steps of sully preparation, grading, bleaching, mixing and drying in sequence. The prepared kaolin product is used for preparing the catalyst used in catalytic cracking technology of petroleum chemical industry. The invention changes the method of mixing first and then sorting used for preparing the kaolin product of the exsiting domestic kaolin enterprises. The method, aiming at different raw materials, adopts a unique selecting technology to prepare the kaolin product with moderate degree of order and the contents of kaolinite (platelets) and halloysite (tubes) in the product are controlled effectively.

Description

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Claims

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Application Information

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Owner 中国高岭土有限公司
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