DSpace Communidade:http://repositorio.ufc.br/handle/riufc/586602026-06-11T16:52:01Z2026-06-11T16:52:01ZAnálise de custos da aplicação do sistema de iniciação não elétrico em uma pedreira dos Sertões de Crateús-CESouza, Antonio Ítalo Rodrigues dehttp://repositorio.ufc.br/handle/riufc/847892026-02-13T15:57:29Z2026-01-01T00:00:00ZTítulo: Análise de custos da aplicação do sistema de iniciação não elétrico em uma pedreira dos Sertões de Crateús-CE
Autor(es): Souza, Antonio Ítalo Rodrigues de
Abstract: The rock breaking stage is fundamental in the mining process, as it directly influences operational efficiency, production costs, and the quality of fragmentation required in subsequent stages of mining. In this context, this study analyzes the technical and economic feasibility of applying the non-electric initiation system (NONEL) in a blasting plan developed for a gneiss quarry, considering that the costs of explosives and accessories represent a significant portion of blasting operations. The methodology adopted was based on a literature review, collection of geological and operational data from the quarry studied, and the development of new firing plans using the NONEL system, considering parameters such as distance, spacing, bench height, explosive charge distribution, and firing sequence. The results obtained and bibliographic studies indicate that the use of NONEL provides greater reliability in shock wave transmission, with a possible reduction in detonation failures, in addition to contributing to a decrease in the consumption of explosives and accessories. The main advantages of the system include greater operational safety, resistance to electrical interference, and the potential for reduced consumption of explosives. A disadvantage is the possibility of occasional failures associated with loss of contact in the charge column. Overall, the cost analysis showed a reduction in overall blasting costs from R$257,300.64 to R$105,285.08, or R$123,232.79, when two Nonel accessories were used per hole, showing that the NONEL system is a technically efficient and economically advantageous alternative, contributing to cost optimization and the reduction of operational risks in open-pit mining activities.
Tipo: TCC2026-01-01T00:00:00ZAproveitamento sustentável dos resíduos da extração de calcário no estado do Ceará: uma revisão sistemática da literaturaCosta, Laércio Silva dahttp://repositorio.ufc.br/handle/riufc/847882026-02-13T15:33:20Z2026-01-01T00:00:00ZTítulo: Aproveitamento sustentável dos resíduos da extração de calcário no estado do Ceará: uma revisão sistemática da literatura
Autor(es): Costa, Laércio Silva da
Abstract: The extraction of Pedra Cariri in Ceará, although vital for the regional economy, generates an alarming volume of waste, causing serious environmental liabilities and risks to fossil heritage. This study aimed to perform a systematic literature review associated with a bibliometric analysis of the scientific production regarding the utilization of these residues. Using the PRISMA protocol and the VOSviewer tool, 33 studies were analyzed from the Scopus, Google Scholar, and Web of Science databases, up to December 2025. The bibliometric results revealed significant growth in publications starting in 2015, led by institutions from Ceará (UFC, IFCE, UFCA) in interstate collaboration networks. Technically, the review indicated the feasibility of utilizing the waste in three main axes: (i) civil construction, where the fine particle size promotes the filler effect, filling micropores and densifying cementitious matrices and mortars, achieving high mechanical strength; (ii) agriculture, validating its efficacy as an acidity corrective, increasing soil base saturation; and (iii) advanced materials, highlighting the production of artificial stones and biomaterials due to high chemical purity. Thus, the literature analysis evidences that the waste generated in limestone extraction in Ceará transcends the condition of environmental liability, emerging as technically versatile and strategic byproducts for fostering the circular economy in the Araripe region.
Tipo: TCC2026-01-01T00:00:00ZUso do método de enumeração completa para otimização da mistura de calcário para indústria cimenteiraSilva, Joice Maria de Paivahttp://repositorio.ufc.br/handle/riufc/847632026-02-12T17:07:11Z2026-01-01T00:00:00ZTítulo: Uso do método de enumeração completa para otimização da mistura de calcário para indústria cimenteira
Autor(es): Silva, Joice Maria de Paiva
Abstract: The mining sector has been undergoing significant transformations in the global economic landscape, marked by an increasingly competitive and technological environment. Companies in the sector have been directing efforts towards improving their production processes, aiming to increase operational efficiency and productivity while simultaneously seeking to reduce costs. In this context, there is a growing interest in the use of operational research tools to support decision-making. This area stands out for allowing the modeling and analysis of different qualitative and quantitative variables in diverse situations, providing a more precise evaluation in the planning of solutions. For mining companies, which frequently make decisions based on previous practical experiences, operational research represents an opportunity for a technical and structured approach. A practical example of its application is in the formation of ore piles generated by materials with different qualities in different mining fronts, a common challenge faced by these companies. In this sense, the present study aims to address the need to optimize the process, aiming to maximize the production of material that meets the grades required by quality control and to assist in the short-term planning of a limestone mine. To achieve this objective, an on-site survey was conducted to obtain the main parameters of the mining company's production process: equipment capacity, daily production of each tunnel, and the limits of quality control parameters (Lime Saturation Factor - CSF, Silica Modulus - MS, and Alumina Modulus - MA) for the different types of limestone. The Complete Enumeration method was applied to the modeling in conjunction with Excel software, an approach that enabled the generation of solutions that meet operational and quality constraints, in order to obtain viable solutions for the problem observed in cement production. The results demonstrated that the model was able to generate viable solutions for scenarios I, II, and III, meeting the established quality limits and the production required by the plant, proving its effectiveness in defining the ideal mixing proportions between the stockpiles.
Tipo: TCC2026-01-01T00:00:00ZEvolução da atividade minerária no município de Santa Quitéria (CE) e sua influência do desenvolvimento econômico localSilva, Matheus Vieira dahttp://repositorio.ufc.br/handle/riufc/847532026-02-12T14:12:55Z2026-01-01T00:00:00ZTítulo: Evolução da atividade minerária no município de Santa Quitéria (CE) e sua influência do desenvolvimento econômico local
Autor(es): Silva, Matheus Vieira da
Abstract: Mining is essential to human development, with direct impacts on industry and technological innovation. Brazil stands out globally in the extraction, processing, and export of mineral inputs due to its geological diversity, which attracts significant interest from international markets. In recent years, the state of Ceará has gained prominence in the export market of ornamental stones, considered an important and strategic segment of regional mining. In this context, the municipality of Santa Quitéria stands out for hosting one of the largest uranium deposits, in addition to its role in the production and export of ornamental stones in Ceará. Although mining brings several local benefits in terms of development, there is limited discussion regarding economic parameters and how they reflect the influence of mining on a municipality’s economic development. Therefore, this study aims to analyze the contribution of mining to the economic development of Santa Quitéria through the use of economic indicators such as Gross Domestic Product (GDP), Financial Compensation for Mineral Exploitation(CFEM), and Fiscal Added Value (FAV), as well as to understand the role of active mining processes, local development, and job creation. The analysis of the indicators revealed that between 2018 and 2024, the municipality remained economically stable in the face of global crises, maintaining steady growth in tax revenues and CFEM transfers, ranking 12th (2.58%) among the main mining municipalities in the state. In addition, the economic potential of the municipality was confirmed through the Fiscal Added Value (FAV), along with a growth trend driven by the search for natural resources, evidenced by 99 mining processes under the exploration authorization regime and the installation of large-scale enterprises, such as the Santa Quitéria Project. Although mining is not yet the largest source of direct formal employment, the mapping of active mining processes and the projections of the Santa Quitéria Project indicate that mining activity will consolidate as a strategic ally of the local economy, with expectations of a significant increase in economic participation, tax revenue, and formal job creation.
Tipo: TCC2026-01-01T00:00:00Z