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N332274 · 2023-04-27 — The tariff classification of rice hull (husk) ash from India
The product under consideration is rice hull (husk) ash. The product is obtained from the incineration of rice hulls or husks. It will be imported as a white, granular material that will be imported in bulk sacks. The applicable subheading for the rice hull (husk) ash will be 2621.90.0000, Harmonized Tariff Schedule of the United States (HTSUS), which provides for other slag and ash, including seaweed ash (kelp); ash and residues from the incineration of municipal waste: other. The general rate of duty will be free.. Duty rates are provided for your convenience and are subject to change. The…
N248692 · 2014-03-21 — The tariff classification of cenospheres from Germany
Samples of this merchandise were submitted with your ruling request. These samples were sent to our U.S. Customs and Border Protection Laboratory for analysis. Our laboratory has now completed its analysis. In your letter you indicated that this merchandise is a residue of fly ash produced as a byproduct of the burning of coal. You stated that the cenospheres will be used as filler material. Our laboratory has reported that the merchandise is a powder consisting mostly of spherical particles of aluminum silicate less than one millimeter in diameter. Although you described the merchandise as…
N222055 · 2012-08-30 — The tariff classification of cenospheres from China and India
Samples of these products (item numbers CTB-75, CTB-150 and CTB-500) were submitted with your ruling request. These samples were sent to our Customs and Border Protection Laboratory for analysis. Our laboratory has now completed its analysis. The products are powders consisting mostly of spherical particles less than one millimeter in diameter. You advised us that the cenospheres are composed principally of silica and alumina. The information submitted with your ruling request indicates that this merchandise is produced as a byproduct of coal combustion. The material submitted with your…
H003743 · 2007-08-06 — Revocation of Headquarters Ruling Letter (HQ) 955742, dated April 7, 1994; Classification of micro silica sand.
This letter is to inform you that the Bureau of Customs and Border Protection (CBP) has reconsidered Headquarters Ruling Letter (HQ) 955742, issued to you on behalf of your client, Microcell Australia, on April 7, 1994, concerning the classification under the Harmonized Tariff Schedule of the United States (HTSUS) of micro silica sand. The micro silica sand was classified under heading 2620, HTSUS, which provided for “[a]sh and residues (other than from the manufacture of iron or steel) containing metals or metal compounds.” We have reviewed that ruling and found it to be in error.…
I87036 · 2002-12-02 — The tariff classification of silicon dross from Russia
A sample was submitted with your ruling request. This sample was submitted to our Customs laboratory for analysis. In your letter you indicated that the merchandise in question is a by-product or dross of the production of elemental silicon. You indicated that the dross consists largely of elemental silicon as well as silicon dioxide with smaller amounts of calcium and aluminum oxides. Analysis of the sample by our Customs laboratory confirms your description. You stated that the dross will be used “in the production of alloy briquettes, as a furnace addition in the production of iron.” The…
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