Suitability of selected Nigerian clays for foundry crucibles production

Adeoti, Michael Olalekan; Dahunsi, Olurotimi Akintunde; Awopetu, O.O.; Aramide, Fatai Olufemi; Alabi, Oladunni Oyelola; Johnson, Oluwagbenga T.; Abdulkarim, Anar

doi:10.1016/j.promfg.2019.05.023

Cited by 3 publications

(7 citation statements)

References 3 publications

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“…It is the mass of the particles of material divided by the total volume occupied. The total volume includes particle volume and inter-particle volume [11].…”

Section: Materials Processing Methodsmentioning

confidence: 99%

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Developing Recipe from Local Ceramic Raw Materials for Making Crucibles in Ghana

Asante-Kyei,

Addae,

Aflo

2023

JMMCE

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The study experimented with using local ceramic raw materials (white clay, kaolin and silica or quartz) found in AssinFosu in the Central Region of Ghana to manufacture crucibles for melting metals and other precious minerals. Various physical tests were conducted on the materials to arrive at the body compositions. The compositions were also investigated for their elemental components by using X-ray fluorescence (XRF). The results revealed that the composition of Cru c containing 70% of white clay, 20% of kaolin, 8% of quartz and 2% of white grog; sintered at 1500˚C was very successful and therefore used to develop the recipe to manufacture the proposed crucibles. The "throwing" technique was employed to fabricate the crucibles. Test for thermal expansion was conducted for the manufactured crucibles at 1000˚C for thermal shock and microcracking tests. It was found out among others, that the recipe developed had very good physical and chemical properties of alumina silicate refractory materials and was fit for use at any high-temperature application. The study also recommended among others, that the researchers and institutions responsible for clay research such as Ghana Geological Survey Authority (GGSA) and Centre for Scientific and Industrial Research (CSIR) collaborate to improve upon this innovative idea.

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“…It is the mass of the particles of material divided by the total volume occupied. The total volume includes particle volume and inter-particle volume [11].…”

Section: Materials Processing Methodsmentioning

confidence: 99%

“…Another definition given by Torres et al [10] is that crucibles are ceramic vessels used for dry, that is, high-temperature reactions. In another development, Adeoti et al [11] define crucibles as refractory open-mouth vessels used for melting steel, glasses, iron and others.…”

Section: Brief History Of Cruciblesmentioning

confidence: 99%

Developing Recipe from Local Ceramic Raw Materials for Making Crucibles in Ghana

Asante-Kyei,

Addae,

Aflo

2023

JMMCE

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“…Refractory materials are widely used worldwide in various industrial fields due to their specific properties such as resistance to thermal shocks and aggressive media, mechanical resistance, low thermal expansion, etc. [1] [2] [3] [4]. They are used as crucibles and cups in the mining company, in the furnace coatings, filters, etc.…”

Section: Introductionmentioning

confidence: 99%

“…Foundry activity is virtually paralyzed when basic equipment such as crucibles are not available, should be imported [5]. However, the abundance of natural mineral resources such as refractory clays can favor the local production of these ceramic crucibles [1] [4].…”

Section: Introductionmentioning

confidence: 99%

“…The objective of this work is to manufacture refractory crucibles for industrial application from local clays and sand. According to previous works, the mass composition of silica and alumina in the starting powder should be in the ranges of 60 wt% -65 wt% and 30 wt% -34 wt%, respectively [4] [10]. Some studies, on the other hand, indicate a much wider range of 20 wt% -45 wt% for alumina and the Fe 2 O 3 content should be less than 2.5wt% [1] [11].…”

Section: Introductionmentioning

confidence: 99%

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Manufacture of Industrial Refractory Crucibles Based on Clays from Burkina Faso

Barry,

Sawadogo,

Sawadogo

et al. 2024

JMMCE

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In Burkina Faso, one of the three largest gold producers in West Africa, foundry activity is often paralyzed when basic equipment such as crucibles and cups are not available or should be imported. However, previous studies have shown the availability of kaolinite-rich clay resources that could be used for the local manufacture of silico-aluminous ceramic crucibles. This work allowed to manufacture industrial ceramic crucibles with local clays and then they were tested in foundry industry. The materials were manufactured from three (03) raw materials including two clays (SAB and ROU) and sand. The chemical and mineral analysis has shown that the raw materials are suitable for the formulation of refractory materials. The results of characterization of the materials formulated showed that the properties of use are appreciable. The porosity of the materials is relatively low (23 -28 vol%) with a diametral compressive strength between 0.61 and 1.34 MPa. Crucibles sintered at 1250˚C with a stay of 2 hours have a mechanical strength capable of supporting the weight of the ores contained. These crucibles have a refractoriness under load (T 0.5 ) above 1141˚C and resist chemical attacks. Tests were carried out in the industry at 1100˚C, and the results were satisfactory.

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