Production technology for producing spontaneous glaze bone china by efficient utilization of desert material

Abstract

The invention relates to a production technology for producing spontaneous glaze bone china by efficient utilization of a desert material. The spontaneous glaze bone china is prepared from the following raw materials in percentage by weight: 50-60% of sand grains from desert, 15-25% of halloysite, 15-20% of feldspar, 2-9% of hydroxyl calcium phosphate, 2-3% of nanoscale spodumene, 1-3% of talc and1-1.5% of nanoscale zircon sand; the production technology of the bone china comprises the following steps: dosing according to the formula, ball milling, sieving, iron removal, filter pressing, first pugging, second pugging and setting firing; the setting firing comprises the following steps: preparation of ceramic pug, automatic charging, vacuum heating and pug squeezing, automatic blanking andfeeding, automatic moulding by rolling, drying, demoulding and once firing. According to the production technology provided by the invention, the sand grains in desert are introduced into the Dehua jade china pug to partially replace the raw materials, and the ceramic firing energy consumption and production cost are reduced by the once firing technology; meanwhile, in combination with the intelligent production technology, traditional Dehua jade chain preparation technology is integrated with intelligent production.

Description

technical field [0001] The invention relates to the technical field of ceramics, in particular to a production process for making self-glazed bone china from high-utility desert materials. Background technique [0002] my country is the world's ceramic manufacturing center and a large ceramic production country. The annual output and export volume rank first in the world. Ceramic products are also one of the main products for my country's export earnings. As far as industrial development is concerned, it is necessary to maintain a high annual output and export volume. It is necessary for ceramic enterprises to continuously mine mineral resources to ensure the source of raw materials. Therefore, the ceramic industry has always been a large energy consumer, accounting for a large proportion of energy consumption in the national economy. However, with the depletion of mineral raw materials, the increasingly tense energy supply and the substantial increase in production costs, e...

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Problems solved by technology

[0006] The Chinese invention patent with the authorized announcement number "CN104290187B" discloses a special-shaped ceramic production line. In this invention, the inner mold of the special-shaped plaster mold is transformed into a spliced ​​structure of two halves, and then the mold taking mechanism of the porcelain blank transfer device is used to take out the mold. The inner mold of the special-shaped plaster mold is separated by the mold parting mechanism, and finally the porcelain blank in the inner mold is sucked out by the suction cup assembly, and placed on the finished product conveyor belt to enter the next process, which improves the production efficiency of special-shaped ceramics; but , there are many defects in this invention: 1. The green body mud that is put into the mold for each cutting is fixed, and the consumption of the green body mud cannot be changed. The amount of mud used is also different, and there are defects in the cutting of the mud mud in the above-mentioned invention, which leads to limited ceramic products; Good compaction treatment will lead to bubbles, gaps, etc. in the mud, which will affect the yield of ceramic products; 3. The roll forming device of the invention does not repair the edges and corners of the ceramic blank after roll forming. Need manual repairs, or need a lot of labor costs

The finished ceramic products need to be fired for the first time, glazed, and then fired for the second time. There are many process steps; and sufficient internal and external glazing cannot be guaranteed during the glazing process, which may easily lead to gaps in the finished product and reduce the cost rate

Therefore, the energy consumption of the secondary firing process is relatively large, which does not conform to the development direction of energy saving and consumption reduction, and the firing process is time-consuming and laborious, and the middle layer of the blank glaze will have poor growth

At present, in the production and scientific research practice of the ceramic intelligent production system, the phenomenon of self-glazing or self-releasing glaze or self-decomposing glaze or self-generated glaze in the firing process of clay tires has been paid attention to by the intelligent production system. From the formula, mechanism, Adding activator to the liquid phase precipitation capillary force in the solid phase structure has been discussed in many aspects of the intelligent production system. However, the one-time firing technology of autogenous enamel bone ceramics is still in the process of practical application.

Moreover, traditional ceramic production involves more equipment, requires higher labor costs, and has a low yield

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