ʻO ka piʻi ʻana o ke kumukūʻai ʻo Needle coke i Iulai, ua piʻi nā electrodes graphite ma lalo o 20%.

Ke piʻi mau nei ke kumukūʻai o ka hao hao, e piʻi mau ana ke kumukūʻai o ka hana ʻana i ka umu ahi, a ʻike ʻia ke kumukūʻai o ka hana ʻana i ka umu uila me ka hoʻohana ʻana i ke kila ʻōpala e like me ka mea maka.

ʻO ka mea nui o kēia lā:

ʻO ke kumukūʻai o UHP600 ma ka mākeke graphite electrode o India e piʻi mai 2.9 miliona rupees / ton a i 340,000 rupees / ton, a ʻo ka manawa hoʻokō mai Iulai a i Kepakemapa 21;ʻO ke kumukūʻai o nā electrodes HP450mm e manaʻo ʻia e piʻi mai ka 225,000 rupees / ton i kēia manawa I 275,000 rupees / ton (hoʻonui ʻia e 22%).

Ua hōʻike ʻia ʻo ke kumu nui o kēia piʻi ʻana o ke kumukūʻai, ʻo ia ka piʻi ʻana o ke kumukūʻai o ka coke nila i lawe ʻia mai.Mai ka US $ 1500-1800 / ton i kēia manawa aʻoi aku ma mua o US $ 2000 / ton i Iulai 21, e piʻi ana ke kumukūʻai ma waena o 11% a 33%, aʻoi aku paha.