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Kajian Konsep Teknologi Pengolahan Pasir Zirkon Lokal yang Mengandung Monasit, Senotim dan Ilmenit
DOI: http://dx.doi.org/10.55981/eksplorium.2016.3054
Abstract
ABSTRAK
Keberadaan zirkon (ZrSiO4) di alam kebanyakan berasosiasi dengan beberapa senyawa oksida berharga (SOB) seperti TiO2 dan oksida logam tanah jarang atau rare earth oxides (REO). Keterdapatan mineral alam di Indonesia yang mengandung zirkonium (Zr) dan REO tersebar di 13 wilayah mulai dari Provinsi Aceh sampai Papua Barat. Berdasarkan hal tersebut, maka tujuan penelitian adalah melakukan kajian integrasi teknologi pengolahan pasir zirkon lokal yang mengandung TiO2 dan REO. Penelitian dilakukan dengan menganalisis kandungan SOB dalam sampel pasir zirkon dari daerah Landak dan Tumbang Titi Kalimantan Barat serta Bangka menggunakan XRF. Berdasarkan kandungan SOB dalam pasir zirkon tersebut dapat diprediksi bahwa pasir zirkon dari daerah Landak dan Tumbang Titi Kalimantan Barat serta Bangka mengandung mineral zirkon (ZrSiO4), ilmenit (FeTiO3), monasit (LREE, Th)PO4, dan senotim (HREE, Y, Th)PO4. Berbasis jenis mineral tersebut diperoleh hasil kajian berupa diagram alir proses konsep teknologi konsentrat zirkon menjadi ZrO2 (zirkonia) dan ZrOCl2.8H2O (zirkonium oksiklorida) derajat industri serta zirkonia dan zirconium chemicals derajat nuklir, ilmenit menjadi TiO2, monasit menjadi Nd2O3 dan konsentrat Th(OH)4, senotim menjadi Y2O3, Gd2O3 dan konsentrat Th(OH)4 dalam satu kawasan pilot plant atau pabrik yang terintegrasi. Hasil kajian disimpulkan bahwa konsep pengolahan pasir zirkon lokal yang mengandung monasit, senotim, dan ilmenit dapat dilakukan secara terintegrasi dalam satu kawasan pabrik dengan hasil multi produk. Jika hal tersebut dapat direalisasikan di Indonesia dengan tambahan sistem pengolahan air limbah terpadu, maka selain aman bagi lingkungan juga dapat menghemat biaya produksi dan memberikan nilai tambah ekonomi bagi para pemegang izin usaha pertambangan zirkon.
ABSTRACT
The existence of zircon (ZrSiO4) in the nature is mostly associated with some of the valuable oxide compounds (VOC), such as TiO2 and rare earth oxides (REO). The existence of natural minerals in Indonesia containing zirconium (Zr) and REO lies in 13 regions, ranging from Aceh to West Papua province. Based on those aforementioned aspects, the goal of this research is to conduct the study of integrated technology of local zircon sand processing containing TiO2 and REO. The study was conducted by analyzing the content of VOC in zircon sand samples from the areas of Landak and Tumbang Titi West Kalimantan and Bangka by using XRF. Based on the content of VOC in this zircon sand, it can be predicted that the zircon sand from the area of Landak and Tumbang Titi West Kalimantan and Bangka contains mineral zircon (ZrSiO4), ilmenite (FeTiO3), monazite (LREE, Th)PO4, and xenotime (HREE, Th)PO4. Based on these types of mineral, the flow chart of beneficiation technology process to increase the concentration of each mineral and the flow chart of zircon concentrate process into ZrO2(zirconia) and ZrOCl2.8H2O (zirconium oxychloride) industrial grade and zirconia and zirconium chemicals nuclear grade, ilmenite into TiO2, monazite into Nd2O3, and Th(OH)4 concentrate, xenotime into Y2O3, Gd2O3, and Th(OH)4 concentrate are obtained in one area of pilot plant or an integrated factory. The results of the study concluded that the concept of local processing of zircon sands containing monazite, xenotime, and ilmenite can be either integrated in the region with the results of multi-product plant. If it can be realized in Indonesia with the addition of an integrated waste water treatment system, then in addition to safe for the environment can also save on production costs and give economic added value for shareholders zircon mining permit
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