Ua hāʻule nā ​​kumukūʻai o ka tungsten carbide ʻAmelika i ka pae haʻahaʻa loa i loko o nā makahiki he ʻumi ma waena o ka emi ʻana o nā kumukūʻai ammonium paratungstate (APT) a me nā puke nui o ka puʻupaʻa a me ka ʻōpala tungsten carbide inventory.

ʻO ka hōʻemi ʻana i nā kumukūʻai APT i nā pule i hala iho nei e hōʻemi i ka hoʻihoʻi ʻana i nā mea concentrate mai ka ʻōpala tungsten carbide ma o ka hāʻawi ʻana i kahi mea hānai kumu kūʻai haʻahaʻa no nā huahana tungsten.

Ke hele mai nei ka mākeke carbide scrap US mai ka wā o ka hana ʻana o ka ʻōpala kiʻekiʻe a ʻoiai ke emi nei ka noi no nā mea hana carbide. ʻO ka hoʻonui nui ʻana o ka lawe ʻana mai o ka carbide i hoʻonui i nā mea waiwai kūloko, ʻoiai ke emi nei ka hoʻoikaika waiwai e hoʻohana i kēia mau huahana.

ʻO ka awelika o nā kumukūʻai kūʻai aku i kēlā me kēia mahina mai Kina no APT i Iulai i hōʻea i nā pae haʻahaʻa loa i loko o ʻelua mau makahiki ma $197-207/mtu. Ua hāʻule nā ​​kumukūʻai he 23 pakeneka mai ka awelika o ke kumukūʻai mahina o $ 255-265 / mtu i Ianuali 2019.

ʻO ke kaʻina hana ʻAmelika e kūʻai ana i nā kumukūʻai no nā mea hoʻokomo tungsten carbide a me nā pōʻai i hāʻule i $5.00-6.00/lb i ʻAukake mai $7.25-8.25/lb i hoʻokahi mahina ma mua. ʻO ka hāʻule ʻana o 29pc ke kumu kūʻai haʻahaʻa loa no nā pōʻai carbide a hoʻokomo mai ka hopena o Ianuali 2009.

Ua ʻōlelo ka poʻe kaʻina hana ʻaʻole e hana hou ʻia ka ʻōpala carbide no APT ma nā ʻano like ʻole ma mua o nā makahiki i hala ma muli o ka nele o ka noi mai nā mea kūʻai kūloko a me waho. nā mea mai ka ʻōpala carbide no ke kūʻai hou ʻana. ʻOiai ke koi ʻia e ka APT i lawe ʻia mai, ʻaʻole e hoʻōki nā mea kūʻai aku i ka hana hou ʻana o ka carbide no ke kūʻai ʻana i ka APT ma kahi o ka hoʻomaʻemaʻe ʻana i ka ʻōpala no ka mea.